libobs: Build SIMDE on platforms without SSE2

SIMDE was introduced for aarch64 support, however, the library itself
supports non-SIMD fallback, which allows us provide support to other
platforms without code changes.

There is another world beyond x86. So we can simply enable SIMDE for
processors without SSE2 support.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

deps/media-playback/CMakeLists.txt

@@ -23,26 +23,15 @@ add_library(media-playback STATIC
 	${media-playback_SOURCES}
 	)
 
-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64(le)?")
-	target_compile_options(media-playback
-			PUBLIC
-			-mvsx)
-	add_compile_definitions(NO_WARN_X86_INTRINSICS)
-elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
-	target_compile_options(media-playback
-			PUBLIC)
-elseif(NOT MSVC)
-	target_compile_options(media-playback
-		PUBLIC
-			-mmmx
-			-msse
-			-msse2)
-endif()
+target_compile_options(media-playback
+	PUBLIC
+	${ARCH_SIMD_FLAGS})
 
 target_include_directories(media-playback
 	PUBLIC .
 	)
 
+
 if(NOT MSVC)
         if(NOT MINGW)
                 target_compile_options(media-playback PRIVATE -fPIC)