[CFL] Move SIMD files to x86 folder

Change-Id: I474cd6d75074eb908e8fcf317c2524e3c7f72269

av1/av1.cmake

diff --git a/av1/av1.cmake b/av1/av1.cmake
index dca5dab..787abd1 100644
--- a/av1/av1.cmake
+++ b/av1/av1.cmake
@@ -385,15 +385,15 @@
 
   set(AOM_AV1_COMMON_INTRIN_SSE2
       ${AOM_AV1_COMMON_INTRIN_SSE2}
-      "${AOM_ROOT}/av1/common/cfl_sse2.c")
+      "${AOM_ROOT}/av1/common/x86/cfl_sse2.c")
 
   set(AOM_AV1_COMMON_INTRIN_SSSE3
     ${AOM_AV1_COMMON_INTRIN_SSSE3}
-    "${AOM_ROOT}/av1/common/cfl_ssse3.c")
+    "${AOM_ROOT}/av1/common/x86/cfl_ssse3.c")
 
   set(AOM_AV1_COMMON_INTRIN_AVX2
     ${AOM_AV1_COMMON_INTRIN_AVX2}
-    "${AOM_ROOT}/av1/common/cfl_avx2.c")
+    "${AOM_ROOT}/av1/common/x86/cfl_avx2.c")
 endif ()
 
 if (CONFIG_LOOP_RESTORATION)

av1/common/x86/cfl_avx2.c

diff --git a/av1/common/cfl_avx2.c b/av1/common/x86/cfl_avx2.c
similarity index 100%
rename from av1/common/cfl_avx2.c
rename to av1/common/x86/cfl_avx2.c

av1/common/x86/cfl_sse2.c

diff --git a/av1/common/cfl_sse2.c b/av1/common/x86/cfl_sse2.c
similarity index 100%
rename from av1/common/cfl_sse2.c
rename to av1/common/x86/cfl_sse2.c

av1/common/x86/cfl_ssse3.c

diff --git a/av1/common/cfl_ssse3.c b/av1/common/x86/cfl_ssse3.c
similarity index 100%
rename from av1/common/cfl_ssse3.c
rename to av1/common/x86/cfl_ssse3.c