[roll third_party/pigweed] pw_bluetooth: Add a constant for max controller delay

Add a virtual field for the maximum local controller delay in the
ReadLocalSupportedControllerDelayCommandCompleteEvent.

Test: pw presubmit --step gn_chre_googletest_nanopb_sapphire_build
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/209271
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: cbb3917c36a4f77..56b3cbf0ec8010a
Roller-URL: https://ci.chromium.org/b/8748417183187993121
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iadfd66249f8adb1df983a6278ef96cd033fde8f5
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/209048
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 cbb3917..56b3cbf 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit cbb3917c36a4f77059cd603138c883a30a4e7241
+Subproject commit 56b3cbf0ec8010a65d94d4f9b6e123f40e09ced7