imx: imx8qm-rom7720: switch to binman

Switch to use binman to pack images

Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com>
diff --git a/configs/imx8qm_rom7720_a1_4G_defconfig b/configs/imx8qm_rom7720_a1_4G_defconfig
index c3c93bf..7819bef 100644
--- a/configs/imx8qm_rom7720_a1_4G_defconfig
+++ b/configs/imx8qm_rom7720_a1_4G_defconfig
@@ -20,8 +20,9 @@
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x80200000
 CONFIG_REMAKE_ELF=y
 CONFIG_FIT=y
+CONFIG_FIT_EXTERNAL_OFFSET=0x3000
 CONFIG_SPL_LOAD_FIT=y
-CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh"
+# CONFIG_USE_SPL_FIT_GENERATOR is not set
 CONFIG_BOOTDELAY=3
 CONFIG_USE_BOOTCOMMAND=y
 CONFIG_BOOTCOMMAND="mmc dev ${mmcdev}; if mmc rescan; then if run loadbootscript; then run bootscript; else if run loadimage; then run mmcboot; else run netboot; fi; fi; else booti ${loadaddr} - ${fdt_addr}; fi"