roll: third_party/pigweed 4 commits

80c7c7400725ca1 third_party/fuchsia: Update patch to ignore warnin
6a840f0854d5e26 third_party/fuchsia: Copybara import
ea78a58ca4be0b7 pw_preprocessor: Introduce PW_MODIFY_DIAGNOSTIC_CL
a759e7d95fdfbc9 pw_thread: Disable test_thread_context_facade_test

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: b816ed566711b10..80c7c7400725ca1
Roller-URL: https://ci.chromium.org/b/8738944453957948609
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: If4803e1a72e7592bac1e52195f675bbe4cc0affa
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/231411
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index b816ed5..80c7c74 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit b816ed566711b10544fc1ae2d5154e077737522c
+Subproject commit 80c7c7400725ca15434f8a64a323f7f1bcea64f6