Disable processor optimization on iOS

Change-Id: Ib34ddb689bd133f1ed7aff16f45b5f263d6f72d9
Reviewed-on: https://skia-review.googlesource.com/8314
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2 files changed