[third_party/pigweed] Roll 3 commits

4c1a7158b663f11 pw_kvs: Depend on libraries for fake flash and sto
9da1d58cc8935c2 pw_kvs: Add libraries to reuse partition and store
2bd59a5ace13fb9 pw_web: Fix test format of log-source.test

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 28fa6003e1e2cf4..4c1a7158b663f11
Roller-URL: https://ci.chromium.org/b/8751193271045811505
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I20c70512d6d0f1da7fc3766b76e6bab2d30a0fb4
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/202570
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 28fa600..4c1a715 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 28fa6003e1e2cf472262c80deb2ff7cbb83ed64b
+Subproject commit 4c1a7158b663f114c297d9c0a806f412768e73f8