[third_party/pigweed] Roll 2 commits

c6c4a5bbeef2f11 roll: gn
dabe438c436d688 roll: 310, 311

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: bb8031432ff42f7..c6c4a5bbeef2f11
Roller-URL: https://ci.chromium.org/b/8752505369302252865
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I20d8549b2a718d5d6e3a4b9b9e5123d570c008c8
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/199450
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.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 bb80314..c6c4a5b 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit bb8031432ff42f751b846960871e7525c6c6ea80
+Subproject commit c6c4a5bbeef2f11b88a754a4cbc0270f18df79d7