[third_party/pigweed] Roll 2 commits

dea2ecf94d39c9c pw_unit_test: Clarify status macros are gunit-only
4c0dd405e0eedfa pw_build_info: Make the python module importable

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: a9707e739fefa6f..dea2ecf94d39c9c
Roller-URL: https://ci.chromium.org/b/8749822298578191841
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I785ecc2dfbb436bf4ed590192d003d357d8196be
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/205951
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 a9707e7..dea2ecf 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a9707e739fefa6fbaae0a0f4dd2a85b964188baf
+Subproject commit dea2ecf94d39c9c6f97140190bc6a796d5205b96