Fix chromeos-kevin-builder-perf-fyi.

Change chromeos-kevin-builder-perf-fyi mb_config to be the same as every
other chromeos-kevin builder

Bug: chromium:1159607
Change-Id: I2f279d59d7d96927d34bba059daa4d74df10e4de
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611498Reviewed-by: Ben Pastene <bpastene@chromium.org>
Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Ryan Heise <heiserya@google.com>
Cr-Commit-Position: refs/heads/master@{#840408}

tools/mb/mb_config.pyl

@@ -590,7 +590,7 @@
     'chromium.perf.fyi': {
       'android-cfi-builder-perf-fyi': 'official_goma_minimal_symbols_android_thin_lto_opt',
       'android_arm64-cfi-builder-perf-fyi': 'official_goma_minimal_symbols_android_thin_lto_opt_arm64',
-      'chromeos-kevin-builder-perf-fyi': 'chromeos_kevin',
+      'chromeos-kevin-builder-perf-fyi': 'chromeos_kevin_include_unwind_tables_official',
     },
 
     'chromium.swangle': {

tools/mb/mb_config_expectations/chromium.perf.fyi.json

@@ -29,7 +29,10 @@
   "chromeos-kevin-builder-perf-fyi": {
     "args_file": "//build/args/chromeos/kevin.gni",
     "gn_args": {
+      "exclude_unwind_tables": false,
+      "is_chrome_branded": true,
       "is_chromeos_device": true,
+      "is_official_build": true,
       "ozone_platform_headless": true,
       "use_goma": true
     }