roll: third_party/pigweed 5a9253d..204f542 (2 commits)

204f542:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/429375 third_party/freertos: Add freertos_sys crate
cb73f21:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/429374 pw_toolchain: Add bindgen toolchains

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 5a9253d92fb9dd..204f542d778643
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8676808382230031729
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I2ef3ed8701a07a1cae53cd88ca34a8cab7903e69
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/433992

third_party/pigweed

diff --git a/third_party/pigweed b/third_party/pigweed
index 5a9253d..204f542 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 5a9253d92fb9dd77caefe2214aeee82586663e36
+Subproject commit 204f542d77864384aa10aab4f06fe3e07b70b95c