tiny fixup: depend on :skx

Change-Id: I792f79eb99106b36b8a53af01ee55898bd2041ac
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/294566
Auto-Submit: Mike Klein <mtklein@google.com>
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
1 file changed