roll: third_party/pigweed a551daa..bdf6839 (7 commits)

bdf6839:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/268953 pw_interrupt: Add pw_interrupt_freertos to the backend_multiplexer
60a1d0c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/264641 pw_allocator: Make assertions more tunable
dcd8f58:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/268032 CMake: Set policy to silence warnings in pw_parse_arguments_strict
434a4ff:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/255772 pw_build_mcuxpresso: Add readme generation support
6be7bf4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/261412 pw_unit_test: rm explicit deps on //pw_unit_test
c05977a:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/239734 pw_{clock_tree, stream_uart, uart}_mcuxpresso: Fix bazel dependencies
8a39426:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/267013 bazel: Don't disable layering check for googletest

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: a551daada32288..bdf6839caa0a86
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8722546961485545585
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I539d5d34e6f06818656ac4c10e21fb80bfc420d5
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/268881
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: 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 a551daa..bdf6839 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a551daada32288b2541783d99d81b23a621bf0b7
+Subproject commit bdf6839caa0a86cb3d9b7bbd6379cd11d9a47558