Add RP builder support for min and max binary ops.

These are typical binary ops and don't require any special
handling.

Change-Id: I2c71a6f2af41883522db8b29d76e132edddb59e3
Bug: skia:13676
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/624099
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Arman Uguray <armansito@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2 files changed