Disable SSE on arm;
Disable SSE on arm;

Currently we turn off SSE based on the OS (Android or Emscripten),
but this causes a build error on non-android arm CPUs.  Now we
correctly look at the CPU architecture.

bjornbytes/lovr,bjornbytes/lovr,bjornbytes/lovr,bjornbytes/lovr,bjornbytes/lovr