roll: third_party/pigweed 68644b2..7629bd6 (8 commits)

7629bd6:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/416572 pw_kernel: ForeignList panic on non-empty drop
3c42148:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/416516 pw_kernel: Update foreign_box unittests to use default_handler
fdb7caa:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/416515 pw_kernel: Remove k_doctest config
7ee2a3d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/416956 pw_kernel: Put copyright headers into jinja comments
9336df7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/416514 pw_kernel: Remove host architecture
bbb396f:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/416513 pw_log: Rust println backend should ignore unnecessary casts
a208e18:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/414940 pw_kernel: Fix RISC-V timer init order
5cd3684:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/416512 pw_kernel: Run panic checker as part of target build

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 68644b20ccb324..7629bd6d570e41
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8680026682472441953
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I5a69f66cc91cafe333f363e866e18c008898ffdf
Reviewed-on: https://pigweed-review.googlesource.com/c/gonk/+/417392
diff --git a/third_party/pigweed b/third_party/pigweed
index 68644b2..7629bd6 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 68644b20ccb3242efe1a52a1510969b622695ea3
+Subproject commit 7629bd6d570e41457a4f50bc1291840cd97c0d15