configs: am67a_beagley_ai_a53: Enable additional features

configs: am67a_beagley_ai_a53: Enable additional features

Enable basic EFI debug features, switch over to stdboot, enable GPIO,
LED and PMIC used on this platform. And enable UHS mode support for SD
cards in U-Boot.

Unlike other BeagleBoard products, BeagleY-AI does not have
alternative onboard non-volatile memories, so capsule support does not
make sense.

Acked-by: Andrew Davis <afd@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Andrew Davis <afd@ti.com>