[roll third_party/pigweed] Bazel: Fix alwayslink support in MacOS host_clang

Original-Bug: b/297413805
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/168614

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: fc0a682bc19c5cc..7df1768d915fe11
Roller-URL: https://ci.chromium.org/b/8771490660114271969
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iee6cf5e9c4a812adaeda887afe399ce87ecdf016
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/168716
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 fc0a682..7df1768 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit fc0a682bc19c5cce272a10e4d221e5eb400d6c2b
+Subproject commit 7df1768d915fe11dae05751f70f143e60acfb17a