roll: third_party/pigweed 910cdc4..d54a08c (3 commits)

d54a08c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/341112 size_report: Delete GN builds for size reports
849c9b6:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/340734 pw_kernel: Add a `nop` syscall
77fa72e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/341332 pw_async2: Add missing tests to GN test group; fix shadowing errors

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 910cdc437e4598..d54a08c0cac954
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8698992380749040161
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I137309dcae7b76dab475b2fd08df8cf8b31196e3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/341413
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 910cdc4..d54a08c 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 910cdc437e45987053dee9d22d167095df915810
+Subproject commit d54a08c0cac954148efad881427d8f0781dfe957