As K2 can directly boot U-Boot, add u-boot_HS_MLO as the secure image
name for secure K2 devices, for all boot modes other than SPI flash.
Signed-off-by: Madan Srinivas <madans@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>