[third_party/pigweed] Roll 2 commits

58d0aa38657b2b1 pw_function: Extend CMake support
fdf1cd4bd21812c pw_string: Extend CMake support

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: c2f4080e6740243..58d0aa38657b2b1
Roller-URL: https://ci.chromium.org/b/8824483332007608001
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8824483332007608001
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I00631c8c60a5716c41664fd7474bf8a641c42e39
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/80381
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 c2f4080..58d0aa3 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c2f4080e674024338234d10bb62365a7c024d7c7
+Subproject commit 58d0aa38657b2b12762f3f9a77e242bb04eb3f23