[roll third_party/pigweed] targets/stm32f429i_disc1_stm32cube: Add target

Adds a new stm32f429i_disc1 target that uses the STM32Cube HAL and
FreeRTOS.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/72963

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 387ae513b684e3c..c62a2d2d66bce61
Roller-URL: https://ci.chromium.org/b/8828262130912458785
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8828262130912458785
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I1a85aee3b001e4a5aa171c5ac64fda6f90b889c6
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/73440
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 387ae51..c62a2d2 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 387ae513b684e3c9e76118c83c2223cc29596db3
+Subproject commit c62a2d2d66bce615bbf5814ff004553bd8ef9dd9