Fix build SKNX_NO_SIMD build and G3 roll

Change-Id: Iaf8875085d5a97d4d8b1310f3f2b7c254ba1da67
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/433157
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed