[third_party/pigweed] Roll 2 commits

16d9aa7b128ef89 pw_bluetooth: Define LEChannelSelectionAlgorithmSu
e539a0b0def3b6a pw_bluetooth: Define LEScanTimeoutSubevent

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: f5540e6a1c3bf0b..16d9aa7b128ef89
Roller-URL: https://ci.chromium.org/b/8766763420531090769
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I0b1ae6fc67e4033dedbaba24cfc6986b7b70e784
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/177077
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 f5540e6..16d9aa7 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit f5540e6a1c3bf0b2eb2675194db2ac584ebd3297
+Subproject commit 16d9aa7b128ef89ce3fa57f03c4591b54c5324d9