[third_party/pigweed] Roll 9 commits

c6c4a5bbeef2f11 roll: gn
dabe438c436d688 roll: 310, 311
bb8031432ff42f7 pw_i2c_rp2040: Initiator implementation
a4bba78b1e9a492 third_party/emboss: Assume newer emboss version 2/
910df6e3f5bcf8d pw_bluetooth_proxy: Bluetooth proxy module and ini
57ed394d46cf9c3 pw_channel: Introduce forwarding channels
59f919a2d3be9d9 pw_unit_test: Add failing results test record
9504f97a66a10b8 docs: Update changelog
48fe6ee0922e732 pw_polyfill: Simplify backported features table

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: b919fb4ac9a67ea..c6c4a5bbeef2f11
Roller-URL: https://ci.chromium.org/b/8752503795440353489
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I787c6e0a285d01e7a75b498c3b62dff5a4e4fd91
Reviewed-on: https://pigweed-review.googlesource.com/c/gonk/+/199451
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 b919fb4..c6c4a5b 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit b919fb4ac9a67ea312b91422f06d05ac2e2fe182
+Subproject commit c6c4a5bbeef2f11b88a754a4cbc0270f18df79d7