[third_party/pigweed] Roll 3 commits

e84673095f8d862 pw_bluetooth_proxy: Move ProxyHost methods to .cc
5c47f7009f66838 pw_bluetooth_proxy: Rename HciProxy to ProxyHost
26f064159c278b2 pw_bluetooth_proxy: Delete policies functionality

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: e3a20766f69442f..e84673095f8d862
Roller-URL: https://ci.chromium.org/b/8749176382708931553
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I2ddf8906422b7b8ebf27fbafbccc29ce75b72d75
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/207573
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 e3a2076..e846730 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e3a20766f69442ffde9dbdd3610bb057981e3ff7
+Subproject commit e84673095f8d8629f42370be856642fb84123ee3