Rename file so it gets compiled with the correct options

Change-Id: I7781ba9af9bffe7f77fab862c096a911a0580e56

av1/av1_cx.mk

diff --git a/av1/av1_cx.mk b/av1/av1_cx.mk
index 35a0447..1154f4d 100644
--- a/av1/av1_cx.mk
+++ b/av1/av1_cx.mk
@@ -109,7 +109,7 @@
 AV1_CX_SRCS-yes += encoder/clpf_rdo_simd.h
 AV1_CX_SRCS-$(HAVE_SSE2) += encoder/clpf_rdo_sse2.c
 AV1_CX_SRCS-$(HAVE_SSSE3) += encoder/clpf_rdo_ssse3.c
-AV1_CX_SRCS-$(HAVE_SSE4_1) += encoder/clpf_rdo_sse4_1.c
+AV1_CX_SRCS-$(HAVE_SSE4_1) += encoder/clpf_rdo_sse4.c
 AV1_CX_SRCS-$(HAVE_NEON) += encoder/clpf_rdo_neon.c
 endif
 ifeq ($(CONFIG_PVQ),yes)

av1/encoder/clpf_rdo_sse4.c

diff --git a/av1/encoder/clpf_rdo_sse4_1.c b/av1/encoder/clpf_rdo_sse4.c
similarity index 100%
rename from av1/encoder/clpf_rdo_sse4_1.c
rename to av1/encoder/clpf_rdo_sse4.c