FEX: Only pass CPU tunables to FEXCore and FEXLoader

This fixes an issue where CPU tunables were ending up in the thunk
generator which means if your CPU doesn't support all the features on
the *Builder* then it would crash with SIGILL. This was happening with
Canonical's runners because they typically only support ARMv8.2 but we
are compiling packages to run on ARMv8.4 devices.

cc: FEX-2311.1

Source/Tools/FEXLoader/CMakeLists.txt

@@ -37,6 +37,7 @@ if (NOT MINGW_BUILD)
         ${PTHREAD_LIB}
         fmt::fmt
     )
+    target_compile_options(${NAME} PRIVATE ${FEX_TUNE_COMPILE_FLAGS})
     target_compile_definitions(${NAME} PRIVATE -DFEXLOADER_AS_INTERPRETER=${AsInterpreter})
 
     if (CMAKE_BUILD_TYPE MATCHES "RELEASE")