Add support and config files for PGO and Lacros Arm64

Adding required changes to infra to support and use lacros arm64
profiles.

Bug: 1417071
Change-Id: Ic6cea7df6684210e6364fb9b4a95212366c75420
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4431779
Reviewed-by: Sven Zheng <svenzheng@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Jeff Yoon <jeffyoon@google.com>
Cr-Commit-Position: refs/heads/main@{#1132127}

diff --git a/tools/update_pgo_profiles.py b/tools/update_pgo_profiles.py
index a22f5dd..2e5c818 100755
--- a/tools/update_pgo_profiles.py
+++ b/tools/update_pgo_profiles.py

@@ -133,7 +133,14 @@
       '--target',
       required=True,
       choices=[
-          'win32', 'win64', 'mac', 'mac-arm', 'linux', 'lacros64', 'lacros-arm'
+          'win32',
+          'win64',
+          'mac',
+          'mac-arm',
+          'linux',
+          'lacros64',
+          'lacros-arm',
+          'lacros-arm64',
       ],
       help='Identifier of a specific target platform + architecture.')
   subparsers = parser.add_subparsers()