arm: imx8ulp: add container support

i.MX8ULP support using ROM API to load container image,
it use same ROM API as i.MX8MN/MP, and use same container format
as i.MX8QM/QXP.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 26bfc5c..c089664 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -161,7 +161,7 @@
 
 config SPL_IMX_ROMAPI_LOADADDR
 	hex "Default load address to load image through ROM API"
-	depends on IMX8MN || IMX8MP
+	depends on IMX8MN || IMX8MP || IMX8ULP
 
 config IMX_DCD_ADDR
 	hex "DCD Blocks location on the image"