memalign is Linux-specific, so use C11 aligned_alloc instead

In file included from decode_hybrid_vp9.cpp:68:
In file included from ./decode_hybrid_vp9.h:42:
/usr/include/malloc.h:3:2: error: "<malloc.h> has been replaced by <stdlib.h>"
#error "<malloc.h> has been replaced by <stdlib.h>"
 ^

intel_hybrid_hostvld_vp9.cpp:428:42: error: use of undeclared identifier 'memalign'
            (PINTEL_HOSTVLD_VP9_NEIGHBOR)memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE, dwSize);
                                         ^
intel_hybrid_hostvld_vp9.cpp:433:9: error: use of undeclared identifier 'memalign'
        VP9_REALLOCATE_ABOVE_CTX_BUFFER(pFrameInfo->EntropyContextAbove.pu8Buffer, dwSize);
        ^
intel_hybrid_hostvld_vp9.cpp:91:31: note: expanded from macro 'VP9_REALLOCATE_ABOVE_CTX_BUFFER'
    pAboveCtxBuffer = (PUINT8)memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE, size); \
                              ^
intel_hybrid_hostvld_vp9.cpp:448:40: error: use of undeclared identifier 'memalign'
        pFrameInfo->ModeInfo.pBuffer = memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE,
                                       ^
intel_hybrid_hostvld_vp9.cpp:457:9: error: use of undeclared identifier 'memalign'
        VP9_REALLOCATE_HOSTVLD_1D_BUFFER_UINT8(pFrameState->pLastSegIdBuf, dwSize);
        ^
intel_hybrid_hostvld_vp9.cpp:99:43: note: expanded from macro 'VP9_REALLOCATE_HOSTVLD_1D_BUFFER_UINT8'
    (pHostvldBuffer)->pu8Buffer = (PUINT8)memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE, dwBufferSize); \
                                          ^
/usr/include/malloc.h:3:2: error: "<malloc.h> has been replaced by <stdlib.h>"
#error "<malloc.h> has been replaced by <stdlib.h>"
 ^
intel_hybrid_debug_dump.cpp:169:20: error: use of undeclared identifier 'memalign'
     ptr = (char *)memalign(alignment, tmp_size);
                   ^

--- src/vp9hdec/decode_hybrid_vp9.h.orig	2016-09-07 23:36:28 UTC
+++ src/vp9hdec/decode_hybrid_vp9.h
@@ -39,8 +39,6 @@
 #include "intel_hybrid_hostvld_vp9.h"
 #include "intel_hybrid_common_vp9.h"
 
-#include <malloc.h>
-
 #define INTEL_HYBRID_VP9_PAGE_SIZE       0x1000
 
 #define INTEL_HYBRID_VP9_KEY_FRAME       0
--- src/vp9hdec/intel_hybrid_debug_dump.cpp.orig	2016-09-07 23:36:28 UTC
+++ src/vp9hdec/intel_hybrid_debug_dump.cpp
@@ -34,8 +34,6 @@
 #include <errno.h>
 #include <stdlib.h>
 
-#include <malloc.h>
-
 static int intel_hybrid_createfile(
     int		*fd,
     const char           *lpFileName,
@@ -166,7 +164,7 @@ char *intel_alloc_zero_aligned_memory(uint32_t size, u
      size_t tmp_size;
 
      tmp_size = ALIGN(size, alignment);
-     ptr = (char *)memalign(alignment, tmp_size);
+     ptr = (char *)aligned_alloc(alignment, tmp_size);
 
      if (ptr) {
          memset(ptr, 0, tmp_size);
--- src/vp9hdec/intel_hybrid_hostvld_vp9.cpp.orig	2016-09-07 23:36:28 UTC
+++ src/vp9hdec/intel_hybrid_hostvld_vp9.cpp
@@ -88,7 +88,7 @@ do {                                                  
 #define VP9_REALLOCATE_ABOVE_CTX_BUFFER(pAboveCtxBuffer, size) \
 do {                                                           \
     VP9_ALIGNED_FREE_MEMORY(pAboveCtxBuffer);                                     \
-    pAboveCtxBuffer = (PUINT8)memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE, size); \
+    pAboveCtxBuffer = (PUINT8)aligned_alloc(INTEL_HOSTVLD_VP9_PAGE_SIZE, size); \
 } while(0)
 
 #define VP9_REALLOCATE_HOSTVLD_1D_BUFFER_UINT8(pHostvldBuffer, dwBufferSize)    \
@@ -96,7 +96,7 @@ do                                                    
 {                                                                               \
     VP9_ALIGNED_FREE_MEMORY((pHostvldBuffer)->pu8Buffer);                       \
     (pHostvldBuffer)->dwSize = dwBufferSize;                                    \
-    (pHostvldBuffer)->pu8Buffer = (PUINT8)memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE, dwBufferSize); \
+    (pHostvldBuffer)->pu8Buffer = (PUINT8)aligned_alloc(INTEL_HOSTVLD_VP9_PAGE_SIZE, dwBufferSize); \
 } while (0)
 
 VAStatus Intel_HostvldVp9_Execute_MT (
@@ -425,7 +425,7 @@ VAStatus Intel_HostvldVp9_PreParser (PVOID pVp9FrameSt
         dwSize = dwNumAboveCtx * sizeof(*pFrameInfo->pContextAbove);
         VP9_ALIGNED_FREE_MEMORY(pFrameInfo->pContextAbove);
         pFrameInfo->pContextAbove =
-            (PINTEL_HOSTVLD_VP9_NEIGHBOR)memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE, dwSize);
+            (PINTEL_HOSTVLD_VP9_NEIGHBOR)aligned_alloc(INTEL_HOSTVLD_VP9_PAGE_SIZE, dwSize);
 
         dwNumAboveCtx <<= 1;
         // Entropy context, per 4x4 block. Allocate once for all the planes
@@ -445,7 +445,7 @@ VAStatus Intel_HostvldVp9_PreParser (PVOID pVp9FrameSt
     if (dwSize > pFrameInfo->ModeInfo.dwSize)
     {
         VP9_ALIGNED_FREE_MEMORY(pFrameInfo->ModeInfo.pBuffer);
-        pFrameInfo->ModeInfo.pBuffer = memalign(INTEL_HOSTVLD_VP9_PAGE_SIZE,
+        pFrameInfo->ModeInfo.pBuffer = aligned_alloc(INTEL_HOSTVLD_VP9_PAGE_SIZE,
             dwSize * sizeof(INTEL_HOSTVLD_VP9_MODE_INFO));
         pFrameInfo->ModeInfo.dwSize  = dwSize;
     }