configs: m8183: android: add android_dt_dir for A/B

This has been forgotten for the A/B environment. Add it back

Fixes: 2210c85c29ee ("configs: mt8183: android: add A/B slot select support")
Bug: https://baylibre.atlassian.net/browse/RITA-89
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
1 file changed