imx: add imx8x based deneb board

Add support for Capricorn Deneb SoM variant.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig
index bb45c8e..5827ab3 100644
--- a/arch/arm/mach-imx/imx8/Kconfig
+++ b/arch/arm/mach-imx/imx8/Kconfig
@@ -55,6 +55,11 @@
 	select BOARD_LATE_INIT
 	select IMX8QXP
 
+config TARGET_DENEB
+	bool "Support i.MX8QXP Capricorn Deneb board"
+	select BOARD_LATE_INIT
+	select IMX8QXP
+
 config TARGET_GIEDI
 	bool "Support i.MX8QXP Capricorn Giedi board"
 	select BOARD_LATE_INIT