Fix ARM build

[elad335]

Attempt to address #12577

[clienthax]

Looks like theres a couple more errors when running the arm64 ci for macos in my pr

/private/var/folders/0d/08wbx2j52nx5hjg16cshb8g80000gn/T/cirrus-ci-build/rpcs3/Emu/RSX/Common/BufferUtils.cpp:364:9: error: use of undeclared identifier 'upload_xi16'
                                r = upload_xi16(src.data(), dst.data(), count);

/private/var/folders/0d/08wbx2j52nx5hjg16cshb8g80000gn/T/cirrus-ci-build/rpcs3/Emu/RSX/Common/BufferUtils.cpp:366:9: error: use of undeclared identifier 'upload_xi32'
                                r = upload_xi32(src.data(), dst.data(), count);

[elad335]

Works now.