[third_party/pigweed] Roll 2 commits

a5038affded6fea docs: Add breadcrumbs
97f12d317d2ef3d Revert "roll: clang"

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 5165b9c17a9933b..a5038affded6fea
Roller-URL: https://ci.chromium.org/b/8755363128649887297
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: If7b9791e39e67b296028b23480bb3d7baf90d75f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/193592
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 5165b9c..a5038af 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 5165b9c17a9933b8d0714ef701421bf065d5d66a
+Subproject commit a5038affded6feab2522a7dcc781c21c4f16cc1e