configs: am335x_hs_evm_uart: Add YMODEM SPL support for UART boot

UART booting requires YMODEM support. Add this here.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
1 file changed