Enable ARM64 intrinsics.

This also moves ARM intrinsic ifdefs behing ARCH_ARM_USE_INTRINSICS instead of ARCH_ARM_HAVE_VFP.

Change-Id: I48d3d55c77feb931e22288828247e281db43d32b
diff --git a/cpu_ref/rsCpuIntrinsicYuvToRGB.cpp b/cpu_ref/rsCpuIntrinsicYuvToRGB.cpp
index f65d6aa..563b3e1 100644
--- a/cpu_ref/rsCpuIntrinsicYuvToRGB.cpp
+++ b/cpu_ref/rsCpuIntrinsicYuvToRGB.cpp
@@ -161,7 +161,7 @@
         out++;
         x1++;
     }
-#if defined(ARCH_ARM_HAVE_VFP)
+#if defined(ARCH_ARM_USE_INTRINSICS)
     if((x2 > x1) && gArchUseSIMD) {
         int32_t len = x2 - x1;
         if (cstep == 1) {