Makefile: run CONFIG_BOARD_SIZE_LIMIT against .img

With the current Makefile, CONFIG_BOARD_SIZE_LIMIT is used to check
the U-Boot binary without devicetree only. This produces wrong results
when OF_SEPARATE is used.

To fix this, run the CONFIG_BOARD_SIZE_LIMIT check on all .img binaries
as well.
Signed-off-by: NSimon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Makefile

@@ -1198,6 +1198,7 @@ MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
 		$(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
 	$(call if_changed,mkimage)
+	$(BOARD_SIZE_CHECK)
 
 u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE
 	$(call if_changed,mkfitimage)