Add av1_get_br_level_counts_sse2()

Change-Id: I6ce7aea19e3bdeef24d3fe66ac6eba7b8d585f9a
diff --git a/av1/av1_common.mk b/av1/av1_common.mk
index f0c65c2..ed5a7ec 100644
--- a/av1/av1_common.mk
+++ b/av1/av1_common.mk
@@ -76,6 +76,7 @@
 AV1_COMMON_SRCS-yes += common/av1_inv_txfm2d.c
 AV1_COMMON_SRCS-yes += common/av1_inv_txfm1d_cfg.h
 AV1_COMMON_SRCS-$(HAVE_AVX2) += common/x86/convolve_avx2.c
+AV1_COMMON_SRCS-$(HAVE_SSE2) += common/x86/mem_sse2.h
 AV1_COMMON_SRCS-$(HAVE_SSSE3) += common/x86/av1_convolve_ssse3.c
 ifeq ($(CONFIG_CONVOLVE_ROUND)x$(CONFIG_COMPOUND_ROUND),yesx)
 AV1_COMMON_SRCS-$(HAVE_SSE4_1) += common/x86/av1_convolve_scale_sse4.c
@@ -167,6 +168,10 @@
 endif
 endif
 
+ifeq ($(CONFIG_LV_MAP),yes)
+AV1_COMMON_SRCS-$(HAVE_SSE2) += common/x86/txb_sse2.c
+endif
+
 ifeq ($(CONFIG_Q_ADAPT_PROBS),yes)
 AV1_COMMON_SRCS-yes += common/token_cdfs.h
 endif