roll: third_party/pigweed d176c5e..b1eb8c3 (5 commits)

b1eb8c3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/316733 doxygen: Migrate pw_spi
4dc0794:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/318052 doxygen: Migrate pw_log_string and FreeRTOS
abbef27:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/317226 pw_build: Make Workflows output root configurable
f1a3462:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/317734 pw_hdlc: Fix public dependency
9c940d5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/317225 pw_cli: Support custom MultitoolCli arguments

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: d176c5ed5662dd..b1eb8c3e54aadb
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8704812793847045073
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I7bda9934205328111b325373e37cdd9ef3a3d741
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/318712
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.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 d176c5e..b1eb8c3 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit d176c5ed5662dd68d79eddbf97efa0807cf80e66
+Subproject commit b1eb8c3e54aadb3846cf53c59f6ace61ee425e32