[third_party/pigweed] Roll 7 commits

15660a9a2d0102e pw_i2c_mcuxpresso: Add i3c initiator
8dfb6ef0937612f pw_bluetooth: Disable emboss enum traits
8741fcf0a55d5bb pw_i2c_mcuxpresso: Remove swatiwagh from OWNERS
8a4d92baabb5a1a pw_i2c: Update OWNERS
480bffe656da23d pw_bluetooth_proxy: Update tests to remove RVNO as
436fcd614e916bf roll: clang
87d207a71a5d3bd pigweed: Add additional owners for emboss

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: d176d28ac80b3af..15660a9a2d0102e
Roller-URL: https://ci.chromium.org/b/8748651209758819601
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I2984ae0f9bb5f8ffef2979da5a9444073b4eafb2
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/208554
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 d176d28..15660a9 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit d176d28ac80b3af847d7479bbdf3bf2e97943943
+Subproject commit 15660a9a2d0102e297854b262049e29b8a7378e8