roll: third_party/pigweed 16368a5..b25f844 (2 commits)

b25f844:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/286452 pw_rpc: Depend on mutex only if enabling PW_RPC_USE_GLOBAL_MUTEX
f36b192:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/286694 roll: gn

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 16368a5e3439be..b25f844d440520
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8716375258347398705
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ifdee3c1e8101906d349813724d8be1d8358ad257
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/286647
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 16368a5..b25f844 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 16368a5e3439beabb237b772fa8e8c70d44436eb
+Subproject commit b25f844d44052006b5d2f347e15954a597be0aa4