[infra] Add Mac Arm64 config

Bug: v8:12793
Change-Id: Ic5e414b5081f4eff95c34910f97dccbb16a9339b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3593785
Auto-Submit: Alexander Schulze <alexschulze@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80031}

infra/mb/mb_config.pyl

@@ -173,6 +173,7 @@
       'V8 Android Arm64 - builder - perf': 'official_android_arm64',
       'V8 Linux - builder - perf': 'official_x86',
       'V8 Linux64 - builder - perf': 'official_x64',
+      'V8 Mac Arm64 - builder - perf': 'official_mac_arm64',
     },
     'client.v8.ports': {
       # Arm.
@@ -475,6 +476,8 @@
     'official_android_arm64': [
       'release_bot', 'arm64', 'android', 'minimal_symbols',
       'android_strip_outputs', 'official', 'disable_pgo'],
+    'official_mac_arm64': [
+      'release_bot', 'arm64', 'official', 'disable_pgo'],
 
     # Release configs for x64.
     'release_x64': [