rockchip: add px30 devicetrees

Add px30 related devicetrees synced from the Linux kernel.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 85ef00a..45538d4 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -67,6 +67,9 @@
 dtb-$(CONFIG_ARCH_OWL) += \
 	bubblegum_96.dtb
 
+dtb-$(CONFIG_ROCKCHIP_PX30) += \
+	px30-evb.dtb
+
 dtb-$(CONFIG_ROCKCHIP_RK3036) += \
 	rk3036-sdk.dtb