roll: third_party/pigweed bbe5cd6..49ac120 (3 commits)

49ac120:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/236256 roll: buildifier
9d17506:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/236232 pw_spi_mcuxpresso: Rename DoConfigure() to DoConfigureLocked()
a14882b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/236292 pw_spi: Minor doc enhancements

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: bbe5cd6062a860..49ac120ed645f6
Roller-URL: https://ci.chromium.org/b/8736524999846468721
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ib1bed36ebf60f2b32a4e98946257dc9976c41156
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/236532
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
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 bbe5cd6..49ac120 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit bbe5cd6062a86012474bdc317036cb87504c0df1
+Subproject commit 49ac120ed645f69507e7f589283e581d49579462