moo: add CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

configs/moo_2g_defconfig

@@ -18,7 +18,8 @@ CONFIG_DISTRO_DEFAULTS=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_FIT=y
 CONFIG_SPL_LOAD_FIT=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg,SPL_TEXT_BASE=0x7E1000,DDR_MB=2048,DEFCONFIG=\"moo_2g\""
+CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh"
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/imx8m/imximage.cfg,SPL_TEXT_BASE=0x7E1000,DDR_MB=2048,DEFCONFIG=\"moo_2g\""
 CONFIG_BOOTSTAGE_STASH_SIZE=4096
 CONFIG_ARCH_MISC_INIT=y
 CONFIG_SPL_BOARD_INIT=y