[third_party/pigweed] Roll 2 commits

f6522afd39b8a19 pw_sync_stl: Extend CMake support
e35b4a1725d815a pw_chrono_stl: Extend CMake support

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: e6c298de0b02ef0..f6522afd39b8a19
Roller-URL: https://ci.chromium.org/b/8824478777649854961
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8824478777649854961
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ia0ed57a792fa6c84142f2bc643a667fdbff1bd9e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/79885
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index e6c298d..f6522af 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e6c298de0b02ef0ece5f801a809d8b61d081f89d
+Subproject commit f6522afd39b8a199d2240c123701fd9a5b9286f3