arm: dts: rockchip: rk312x: add cma_region reference for CIF

Because rk312x CIF has no IOMMU and it should use CMA memory,
adding the cma_region reference for CIF, so that it could get
the CMA memory from our reserved CMA region other than from
system default CMA region.

Change-Id: I7a52abce75a2a82d3068721ddbb10ed89796ac2a
Signed-off-by: Zhong Yichong <zyc@rock-chips.com>

arch/arm/boot/dts/rk312x-android.dtsi

@@ -65,6 +65,10 @@
 	};
 };
 
+&cif_new {
+	memory-region = <&cma_region>;
+};
+
 &dfi {
 	status = "okay";
 };