arm: mach-omap2: Add secure image name common to OMAP and keystone

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: NMadan Srinivas <madans@ti.com>
Signed-off-by: NAndrew F. Davis <afd@ti.com>
Reviewed-by: NTom Rini <trini@konsulko.com>
Reviewed-by: NLokesh Vutla <lokeshvutla@ti.com>

arch/arm/mach-omap2/config_secure.mk

@@ -77,6 +77,12 @@ u-boot-spl_HS_ISSW: $(obj)/u-boot-spl.bin FORCE
 u-boot-spl_HS_SPI_X-LOADER: $(obj)/u-boot-spl.bin FORCE
 	$(call if_changed,mkomapsecimg)
 
+# For supporting single stage boot on keystone, the image is a full u-boot
+# file, not an SPL. This will work for all boot devices, other than SPI
+# flash
+u-boot_HS_MLO: $(obj)/u-boot.bin
+	$(call if_changed,mkomapsecimg)
+
 # For supporting single stage XiP QSPI on AM43xx, the image is a full u-boot
 # file, not an SPL. In this case the mkomapsecimg command looks for a
 # u-boot-HS_* prefix