[roll third_party/pigweed] roll: openocd to 0.12.0-2

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/180170

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 023d64acda3b975..e4b8396799e862b
Roller-URL: https://ci.chromium.org/b/8764882878936727233
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I76feabcae311de54e871d57b83621a692e71df4a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/180251
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 023d64a..e4b8396 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 023d64acda3b9750da4514ec6ff41ace9aeeb346
+Subproject commit e4b8396799e862b200465142a460d77e7280a392