Add immediate_i and immediate_u to the RP builder.

These are just convenience methods; we can reuse the immediate_f op
in SkRasterPipeline and just bitcast the data.

Change-Id: I7d365533d1f0a13f44c8a8395abcb63d841fa317
Bug: skia:13676
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/607636
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2 files changed