Always build u-boot.img when using CONFIG_SPL_FRAMEWORK

Use of uImage formatted u-boot have long been preferred, and recent
changes to better support Falcon mode on MMC now enforces it on MMC.

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>

Makefile

@@ -398,6 +398,7 @@ ALL-y += $(obj)u-boot.srec $(obj)u-boot.bin $(obj)System.map
 ALL-$(CONFIG_NAND_U_BOOT) += $(obj)u-boot-nand.bin
 ALL-$(CONFIG_ONENAND_U_BOOT) += $(obj)u-boot-onenand.bin
 ALL-$(CONFIG_SPL) += $(obj)spl/u-boot-spl.bin
+ALL-$(CONFIG_SPL_FRAMEWORK) += $(obj)u-boot.img
 ALL-$(CONFIG_TPL) += $(obj)tpl/u-boot-tpl.bin
 ALL-$(CONFIG_OF_SEPARATE) += $(obj)u-boot.dtb $(obj)u-boot-dtb.bin
 ifneq ($(CONFIG_SPL_TARGET),)