[third_party/pigweed] Roll 5 commits

e6409a838bd0e6f pw_sync: Follow Soong guidelines
b0d763d4d17841a pw_chrono: Follow Soong guidelines
8c8494548f28209 pw_{assert_log,log}: Follow Soong guidelines
02d3e4353cf8864 pw_stream_shmem_mcuxpresso: Fix interrupt pending
a73e5df5219dd32 pw_transfer: Inline TRANSFER_CLIENT_DEPS

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 2018db0bc261192..e6409a838bd0e6f
Roller-URL: https://ci.chromium.org/b/8752802326368142273
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I76e6a63a9fb86fb005951298ce13913eedbafb26
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/198851
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 2018db0..e6409a8 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 2018db0bc2611925c3dfeb05d1678d97c292cf81
+Subproject commit e6409a838bd0e6f0b83cd19963014d9ae4f04223