imx8m: Enable CONFIG_SPL_FIT_IMAGE_TINY for iMX8M

If we don't define CONFIG_SPL_FIT_IMAGE_TINY, when loading images from FIT,
the SPL will record all loadables' info to u-boot's FDT. This causes
problem when HAB is enabled, because FDT's content is modified before
we authenticate it.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 953841e..35472f4 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -286,6 +286,7 @@
 	bool "Remove functionality from SPL FIT loading to reduce size"
 	depends on SPL_FIT
 	default y if MACH_SUN50I || MACH_SUN50I_H5 || MACH_SUN50I_H6
+	default y if ARCH_IMX8M
 	help
 	  Enable this to reduce the size of the FIT image loading code
 	  in SPL, if space for the SPL binary is very tight.