arm: dts: rockchip: add rk3066a-mk808.dts

MK808 is a RK3066-based board with 1 USB host and 1 USB OTG port,
HDMI and a micro-SD card slot. It also includes on-board NAND
and 1GB of SDRAM. Add rk3066a-mk808.dts. Move U-boot specific
things in a rk3066a-mk808-u-boot.dtsi file.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index df7b4ad..2a0efd8 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -90,6 +90,9 @@
 dtb-$(CONFIG_ROCKCHIP_RK3036) += \
 	rk3036-sdk.dtb
 
+dtb-$(CONFIG_ROCKCHIP_RK3066) += \
+	rk3066a-mk808.dtb
+
 dtb-$(CONFIG_ROCKCHIP_RK3128) += \
 	rk3128-evb.dtb