transpose_sse2.h,cosmetics: fix some comments

Change-Id: Ibb06be8f9b2669aa49490fc8075c6609cb9d4931

aom_dsp/x86/transpose_sse2.h

diff --git a/aom_dsp/x86/transpose_sse2.h b/aom_dsp/x86/transpose_sse2.h
index d0d1ee6..7ac692c 100644
--- a/aom_dsp/x86/transpose_sse2.h
+++ b/aom_dsp/x86/transpose_sse2.h
@@ -17,7 +17,7 @@
 #include "config/aom_config.h"
 
 static INLINE __m128i transpose_8bit_4x4(const __m128i *const in) {
-  // Unpack 16 bit elements. Goes from:
+  // Unpack 8 bit elements. Goes from:
   // in[0]: 00 01 02 03
   // in[1]: 10 11 12 13
   // in[2]: 20 21 22 23
@@ -28,7 +28,7 @@
   const __m128i a0 = _mm_unpacklo_epi8(in[0], in[1]);
   const __m128i a1 = _mm_unpacklo_epi8(in[2], in[3]);
 
-  // Unpack 32 bit elements resulting in:
+  // Unpack 16 bit elements resulting in:
   // 00 10 20 30  01 11 21 31  02 12 22 32  03 13 23 33
   return _mm_unpacklo_epi16(a0, a1);
 }