Revert "use unaligned load"

This reverts commit f50f2fd2.

Change Ib7506e3e aligns the buffer

Change-Id: Ie0f8bd3e57cfdfef81d39638a1451458ebbae2e0

vp8/encoder/x86/temporal_filter_apply_sse2.asm

@@ -84,7 +84,7 @@ temporal_filter_apply_load_8:
         jmp         temporal_filter_apply_load_finished
 
 temporal_filter_apply_load_16:
-        movdqu      xmm0,           [rsi]  ; src (frame1)
+        movdqa      xmm0,           [rsi]  ; src (frame1)
         lea         rsi,            [rsi + rbp] ; += stride
         movdqa      xmm1,           xmm0
         punpcklbw   xmm0,           xmm7   ; src[ 0- 7]