configs: am65x_evm: Add DFU related env variables

Add env variables that set up dfu_alt_info for MMC/EMMC/OSPI. This
is required to allow update of firmware on these media.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
1 file changed