Realtek 2D graphic accelerator for RTS3915

Required properties:
- compatible: "realtek,rts3915-g2d"
- reg: Address range of the G2D registers

Example:
	g2d: g2d@18d0c000 {
		compatible = "realtek,rts3915-g2d";
		reg = <0x18d0c000 0x10000>;
		interrupt-parent = <&vecintc>;
		interrupts = <BSP_IRQ_GE>;
		clocks = <&clks RLX_CLK_GE>;
		clock-names = "ge_ck";
		resets = <&reset FORCE_RESET_GE>,   \
			<&sysmem SYS_MEM_SD_GE >;
		reset-names = "rst","rtsg2d-sysmem-up";
		status = "disabled";
	};
