[roll third_party/pigweed] pw_build: Fix path in Bazel pw_linker_script

Using the full path, rather than the short path, correctly handles
linker scripts from external repositories. (I.e., the case where
repository A defines a binary with a dep on a linker script provided by
repository B.)

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/174591

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 65045ddc71cb4f8..cc0d1d919b2d7b4
Roller-URL: https://ci.chromium.org/b/8768062390822824241
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iff329d51607a0f2467d76403c92d49fef9de29e0
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/174792
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 65045dd..cc0d1d9 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 65045ddc71cb4f882d17cbe97f9373438ed439a8
+Subproject commit cc0d1d919b2d7b47e227aa45c9139336bba193b8