Added first-pass sse2 version of Yaowu's new fdct.

Change-Id: Ib479210067510162879c368428b92690591120b2
diff --git a/vp8/vp8cx.mk b/vp8/vp8cx.mk
index f86a0b2..c88df47 100644
--- a/vp8/vp8cx.mk
+++ b/vp8/vp8cx.mk
@@ -93,6 +93,7 @@
 VP8_CX_SRCS-$(HAVE_MMX) += encoder/x86/sad_mmx.asm
 VP8_CX_SRCS-$(HAVE_MMX) += encoder/x86/dct_mmx.asm
 VP8_CX_SRCS-$(HAVE_MMX) += encoder/x86/subtract_mmx.asm
+VP8_CX_SRCS-$(HAVE_SSE2) += encoder/x86/dct_sse2.asm
 VP8_CX_SRCS-$(HAVE_SSE2) += encoder/x86/variance_sse2.c
 VP8_CX_SRCS-$(HAVE_SSE2) += encoder/x86/variance_impl_sse2.asm
 VP8_CX_SRCS-$(HAVE_SSE2) += encoder/x86/sad_sse2.asm