[roll third_party/pigweed] pw_router: Add Android common backends as dep

Original-Bug: b/328503970
Test: in Android superproject:
  cd external/pigweed && mm
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/198390

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: ce3e3629ef32d03..b919fb4ac9a67ea
Roller-URL: https://ci.chromium.org/b/8752800872164330481
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I2771fd7abf3702ac3c57fc9951019a4bcae9993c
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/198792
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index ce3e362..b919fb4 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit ce3e3629ef32d03191a091e4846736ad5554d9eb
+Subproject commit b919fb4ac9a67ea312b91422f06d05ac2e2fe182