skip dump checks on machines w/o FMAs

They'll never see fma_f32 ops.

Change-Id: I39371606c673fb76bdcbbe08c1b25308675f8f2c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/275151
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
1 file changed