roll: third_party/pigweed 01a13c6..b22a59a (3 commits)

b22a59a:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/322568 doxygen: Always link back to main docs
379fd21:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/322673 pw_kernel: Refactor system_generator to consolidate template rendering
6578880:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/322435 doxygen: Add Google Analytics

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 01a13c65e4a58a..b22a59a7ce927c
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8703524454762571633
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I5dd3887b19ced1acc8da5052e88ddb821f64355a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/322735
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 01a13c6..b22a59a 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 01a13c65e4a58a6154df79eebd77784c5bbe44af
+Subproject commit b22a59a7ce927c795e9d88de0ddc63aa2d36c34f