[roll third_party/pigweed] pw_log: Fix the Pigweed Soong build

Original-Bug: 277108894
Test: check_pigweed.sh
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/193690

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 40fa6880873d75c..4a4b17d29ec1087
Roller-URL: https://ci.chromium.org/b/8755272476130531297
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I8b357f58062db18cdb0eea9735e2eb04db5b2167
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/193637
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 40fa688..4a4b17d 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 40fa6880873d75cef18a9ef229e7cdf8734d3c91
+Subproject commit 4a4b17d29ec10874889a4275075bab2069b8afef