Move clpf_sse4_1.c to clpf_sse4.c in agreement with convention

Change-Id: Ia9adc46b8a4d08c5b8e0089ea1a1526df4f1e1dc

av1/av1_common.mk

diff --git a/av1/av1_common.mk b/av1/av1_common.mk
index 29b71f3..8c23cb1 100644
--- a/av1/av1_common.mk
+++ b/av1/av1_common.mk
@@ -92,7 +92,7 @@
 AV1_COMMON_SRCS-yes += common/clpf_simd.h
 AV1_COMMON_SRCS-$(HAVE_SSE2) += common/clpf_sse2.c
 AV1_COMMON_SRCS-$(HAVE_SSSE3) += common/clpf_ssse3.c
-AV1_COMMON_SRCS-$(HAVE_SSE4_1) += common/clpf_sse4_1.c
+AV1_COMMON_SRCS-$(HAVE_SSE4_1) += common/clpf_sse4.c
 AV1_COMMON_SRCS-$(HAVE_NEON) += common/clpf_neon.c
 endif
 ifeq ($(CONFIG_DERING),yes)

av1/common/clpf_sse4.c

diff --git a/av1/common/clpf_sse4_1.c b/av1/common/clpf_sse4.c
similarity index 100%
rename from av1/common/clpf_sse4_1.c
rename to av1/common/clpf_sse4.c