Add MIPS SIMD Arch (MSA) optimized MirrorRow function

CMakeLists.txt

Index: CMakeLists.txt
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 718b47ad32e1eb319749d12e9c4fafca214c0e42..5309b6758aa787800cf2080ff509706de091dc16 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,6 +40,7 @@ set(ly_source_files
   ${ly_src_dir}/row_any.cc
   ${ly_src_dir}/row_common.cc
   ${ly_src_dir}/row_mips.cc
+  ${ly_src_dir}/row_msa.cc
   ${ly_src_dir}/row_neon.cc
   ${ly_src_dir}/row_neon64.cc
   ${ly_src_dir}/row_gcc.cc
@@ -80,6 +81,7 @@ set(ly_header_files
   ${ly_inc_dir}/libyuv/convert_from.h
   ${ly_inc_dir}/libyuv/convert_from_argb.h
   ${ly_inc_dir}/libyuv/cpu_id.h
+  ${ly_inc_dir}/libyuv/cpu/mips/macros_msa.h  

[fbarchard1, 2016/09/14 01:48:04]

prefer file be in libyuv folder.  havent done cpu specific folders for other
platforms.

[manojkumar.bhosale, 2016/09/14 12:45:29]

OK. Moved back in include/libyuv

   ${ly_inc_dir}/libyuv/planar_functions.h
   ${ly_inc_dir}/libyuv/rotate.h
   ${ly_inc_dir}/libyuv/rotate_argb.h