defconfig: colibri-imx8x: enable CONFIG_OF_SYSTEM_SETUP

Enable a call to ft_system_setup() which reserves M4 memory region.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com>
diff --git a/configs/colibri-imx8x_defconfig b/configs/colibri-imx8x_defconfig
index 76abc39..e1d375c 100644
--- a/configs/colibri-imx8x_defconfig
+++ b/configs/colibri-imx8x_defconfig
@@ -19,6 +19,7 @@
 CONFIG_FIT=y
 CONFIG_FIT_EXTERNAL_OFFSET=0x3000
 CONFIG_FIT_VERBOSE=y
+CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_LOG=y
 # CONFIG_DISPLAY_BOARDINFO is not set