ARM: meson: enable FIT with LEGACY_IMAGE_FORMAT on all configs

Allow all boards to boot with a fitImage, but keep support for
Legacy image format for now.

Link: https://lore.kernel.org/r/20231023-usb-dfu-boot-v1-1-df9d121c67c1@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/configs/radxa-zero_defconfig b/configs/radxa-zero_defconfig
index 23f30f6..0eba5f5 100644
--- a/configs/radxa-zero_defconfig
+++ b/configs/radxa-zero_defconfig
@@ -16,6 +16,10 @@
 CONFIG_SYS_LOAD_ADDR=0x1000000
 CONFIG_DEBUG_UART=y
 CONFIG_REMAKE_ELF=y
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
 CONFIG_OF_BOARD_SETUP=y
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_MISC_INIT_R=y