configs: am335x_guardian: Enable display config

-Enable configuration for display driver
-Disable support for SPL GPIO, CMD LED & SPL GPIO

Signed-off-by: Gireesh Hiremath <Gireesh.Hiremath@in.bosch.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210611161350.2141-14-Gireesh.Hiremath@in.bosch.com