Use _mm_set_epi32() for older version MSVC

_mm_set_epi64x() is not defined for msvc2013, the fix previously
resolved issue for 32 bit build. This commit corrects the condition
to fix the issue for 64 bit build as well.

BUG=aomedia:1815

Change-Id: Ib53088d809411c2b8f216aebdc87d149d6f07b90
diff --git a/aom_dsp/x86/synonyms.h b/aom_dsp/x86/synonyms.h
index f46ee50..9945262 100644
--- a/aom_dsp/x86/synonyms.h
+++ b/aom_dsp/x86/synonyms.h
@@ -62,7 +62,7 @@
 // compilers. The following function is equivalent to _mm_set_epi64x()
 // acting on 32-bit integers.
 static INLINE __m128i xx_set_64_from_32i(int32_t e1, int32_t e0) {
-#if defined(_MSC_VER) && defined(_M_IX86) && _MSC_VER < 1900
+#if defined(_MSC_VER) && _MSC_VER < 1900
   return _mm_set_epi32(0, e1, 0, e0);
 #else
   return _mm_set_epi64x((uint32_t)e1, (uint32_t)e0);
@@ -73,7 +73,7 @@
 // compilers. The following function is equivalent to _mm_set1_epi64x()
 // acting on a 32-bit integer.
 static INLINE __m128i xx_set1_64_from_32i(int32_t a) {
-#if defined(_MSC_VER) && defined(_M_IX86) && _MSC_VER < 1900
+#if defined(_MSC_VER) && _MSC_VER < 1900
   return _mm_set_epi32(0, a, 0, a);
 #else
   return _mm_set1_epi64x((uint32_t)a);