Add tiborg to //build/android owners

Change-Id: I5de49029ca6904d034ecfaa01d780351f5ce22ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1761189
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Commit-Queue: Eric Stevenson <estevenson@chromium.org>
Auto-Submit: Tibor Goldschwendt <tiborg@chromium.org>
Reviewed-by: Eric Stevenson <estevenson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688202}

build/android/OWNERS

@@ -2,6 +2,7 @@ estevenson@chromium.org
 jbudorick@chromium.org
 pasko@chromium.org
 perezju@chromium.org
+tiborg@chromium.org
 wnwen@chromium.org
 
 # COMPONENT: Build