[third_party/pigweed] Roll 10 commits

df4efa0243b5dba pw_result: Define as cc_static_library
595fd9562a8d905 pw_build_info: Add log function of GNU build ID
6ebdfaf68c2e080 pw_span: Define as cc_static_library
d99ef2cf38ae998 pw_preprocessor: Define as cc_static_library
04fbfa382513335 pw_bluetooth_sapphire: Add emulator start workflow
e9441715b774fc7 pw_polyfill: Define as cc_static_library
5c53b840a4ecd3f pw_rpc_transport: Define as cc_static_library
d6d27ec27a71859 pw_function: Define as cc_static_library
e0abef00c07545a pw_multibuf: Define as cc_static_library
cb32298c56d1b71 pw_log_null: Define as cc_static_library

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 7cffdd83bfd413c..df4efa0243b5dba
Roller-URL: https://ci.chromium.org/b/8752360436971016369
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I66f0e99fe87b4e0c7b62b786734eaea4929ffa87
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/200312
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 7cffdd8..df4efa0 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 7cffdd83bfd413cd000322d13d57443306771090
+Subproject commit df4efa0243b5dba294d730b5c1dabe62a898ca3f