[third_party/pigweed] Roll 6 commits

28ee5c51dc16057 bazel: Move integration build config in-repo
fa03307ca0a1a92 pw_env_setup: Update clang next version
a31661c9795660c pw_clock_tree_mcuxpresso: Make Mclk and ClkIn depe
1aa7f44ecb7bf64 pw_clock_tree_mcuxpresso: Move example code out of
21277f94a062107 pw_clock_tree: Introduce ClockSourceNoOp class
65ba1ca17c9d57f pw_spi: Fix sitenav location for RP2040 backend

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 0f2537e5f13d9fd..28ee5c51dc16057
Roller-URL: https://ci.chromium.org/b/8746015862087432385
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ib47368579072f815252a40735b5b840e1f84e57a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/214111
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 0f2537e..28ee5c5 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 0f2537e5f13d9fdd906a66fd550512d9a9e9c505
+Subproject commit 28ee5c51dc1605741f721cacb3df8abe5c246cc7