update SkPreConfig a little

  - add AVX-512 to SK_CPU_SSE_LEVEL
  - remove unused SK_ARM_ARCH
  - small formatting changes
  - no need to check for __ARM_NEON__ and __ARM_NEON...
    __ARM_NEON is defined anywhere we'll find NEON.

Change-Id: I6841097d62cf73ddb749f961261e583474470276
Reviewed-on: https://skia-review.googlesource.com/150960
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed