roll: third_party/pigweed: pw_bloat: Support custom bloaty configs in CLI command

This allows specifying a custom bloaty config instead of defaulting to
generating on from memory regions, so that non-memoryregions targets can
be analyzed through `pw bloat`.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/216133
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https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: e45b2e6e9d351c1..c3e84e4dac07a8b
Roller-URL: https://ci.chromium.org/b/8739694916670886753
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I604eec823f7653719b3f922658993d757853afb2
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/229322
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Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index e45b2e6..c3e84e4 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e45b2e6e9d351c1e207ae4c0489f7416e2ce006c
+Subproject commit c3e84e4dac07a8b122b29e60957125b099338137