Add MSA optimized ARGB scaling functions

CMakeLists.txt

 cmake_minimum_required(VERSION 2.8)
 
 # CMakeLists for libyuv
 # Originally created for "roxlu build system" to compile libyuv on windows
 # Run with -DTEST=ON to build unit tests
 option(TEST "Built unit tests" OFF)
 
 set(ly_base_dir ${CMAKE_CURRENT_LIST_DIR})
 set(ly_src_dir ${ly_base_dir}/source/)
 set(ly_inc_dir ${ly_base_dir}/include)
@@ skipping 32 matching lines @@
   ${ly_src_dir}/row_msa.cc
   ${ly_src_dir}/row_neon.cc
   ${ly_src_dir}/row_neon64.cc
   ${ly_src_dir}/row_gcc.cc
   ${ly_src_dir}/row_win.cc
   ${ly_src_dir}/scale.cc
   ${ly_src_dir}/scale_any.cc
   ${ly_src_dir}/scale_argb.cc
   ${ly_src_dir}/scale_common.cc
   ${ly_src_dir}/scale_mips.cc
+  ${ly_src_dir}/scale_msa.cc
   ${ly_src_dir}/scale_neon.cc
   ${ly_src_dir}/scale_neon64.cc
   ${ly_src_dir}/scale_gcc.cc
   ${ly_src_dir}/scale_win.cc
   ${ly_src_dir}/video_common.cc
 )
 
 set(ly_unittest_sources
   ${ly_base_dir}/unit_test/basictypes_test.cc
   ${ly_base_dir}/unit_test/color_test.cc
@@ skipping 60 matching lines @@
     else()
       message(FATAL_ERROR "TEST is set but unable to find gtest library")
     endif()
   endif()
 
   add_executable(libyuv_unittest ${ly_unittest_sources})
   target_link_libraries(libyuv_unittest ${ly_lib_name} ${GTEST_LIBRARY} pthread)
   if (JPEG_FOUND)
     target_link_libraries(libyuv_unittest ${JPEG_LIBRARY})
   endif()
-  
+
   if(NACL AND NACL_LIBC STREQUAL "newlib")
     target_link_libraries(libyuv_unittest glibc-compat)
   endif()
 
   target_link_libraries(libyuv_unittest gflags)
-  
+
 endif()
 
 install(TARGETS ${ly_lib_name} DESTINATION lib)
 install(FILES ${ly_header_files} DESTINATION include/libyuv)
 install(FILES ${ly_inc_dir}/libyuv.h DESTINATION include/)