third_party/fuchsia: Rename function.patch

Rename function.patch to pigweed_adaptations.patch since it affects more
than just the function sources.

Change-Id: I06c845927928f2cf32866b3dff567f096b3f9910
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/109715
Pigweed-Auto-Submit: Wyatt Hepler <hepler@google.com>
Reviewed-by: Ted Pudlik <tpudlik@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>

third_party/fuchsia/copy.bara.sky

@@ -51,7 +51,8 @@ core.workflow(
     authoring = authoring.pass_thru("Fuchsia Authors <noreply@google.com>"),
     transformations = [
         core.move("", "third_party/fuchsia/repo"),
-        patch.apply(["function.patch"]),
+        # Apply the patch file created by generate_fuchsia_patch.py.
+        patch.apply(["pigweed_adaptations.patch"]),
         # Show all commits but exclude the author to reduce line length.
         metadata.squash_notes(
             "third_party/fuchsia: Copybara import of the fit library\n\n",

third_party/fuchsia/generate_fuchsia_patch.py

@@ -144,7 +144,8 @@ def _main() -> None:
                 Path('third_party/fuchsia/repo', path).as_posix().encode())
 
     # Write the diff to function.patch.
-    with output_path.joinpath('function.patch').open('wb') as output:
+    with output_path.joinpath('pigweed_adaptations.patch').open(
+            'wb') as output:
         output.write(HEADER)
 
         for line in diff.splitlines(keepends=True):