auto: include vendor binaries for graphics

commit dd0d0d1c ("am62x: rework to prepare am62p support") broke the android car variants because we no longer inherit from the vendor binaries.

Add them back in both am62x_car.mk and am62p_car.mk.

Fixes: dd0d0d1c ("am62x: rework to prepare am62p support") broke the android Signed-off-by: Mattijs Korpershoek mkorpershoek@baylibre.com