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/dts/Makefile b/arch/arm/dts/Makefile
index f5169e1..ca759a1 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -700,6 +700,7 @@
 	fsl-imx8qxp-ai_ml.dtb \
 	fsl-imx8qxp-colibri.dtb \
 	fsl-imx8qxp-mek.dtb \
+	imx8-deneb.dtb \
 	imx8-giedi.dtb
 
 dtb-$(CONFIG_ARCH_IMX8M) += \