[Autoroller] Temporarily add P4 instead of Pixel4
[Autoroller] Temporarily add P4 instead of Pixel4

Checking this in because the other Android rollers might also need this.

Change-Id: Ia618d31754e79e4fe38844e8ebdbba3771a9e803
Bug: skia:9595
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/252159
Reviewed-by: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>
Commit-Queue: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot