Adding smaier to android_{system_}sdk OWNERS

Change-Id: I75aa3a4c45c38818ce0c70554fcd92d267cdb91a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4601727
Commit-Queue: Sam Maier <smaier@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Auto-Submit: Sam Maier <smaier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1155058}
NOKEYCHECK=True
GitOrigin-RevId: a28e338459746f187a0064a9b79d02db12633e1d