Add support for importing GL_R16F for YUVA promise images

Change-Id: Id9bfc98e7154dd41f3954c5824a3ab04afce3f50
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206900
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed