ARM: dts: Add support for Liebherr's BK4 device (vf610 based)

This commit adds DTS support for BK4 device from Liebherr. It
uses vf610 SoC from NXP.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/Makefile

@@ -581,6 +581,7 @@ dtb-$(CONFIG_SOC_LS1021A) += \
 	ls1021a-twr.dtb
 dtb-$(CONFIG_SOC_VF610) += \
 	vf500-colibri-eval-v3.dtb \
+	vf610-bk4.dtb \
 	vf610-colibri-eval-v3.dtb \
 	vf610m4-colibri.dtb \
 	vf610-cosmic.dtb \