* Rockchip Smartcard Reader Controller driver.

Required properties:
- compatible: should be "rockchip-scr"
	support smart card reader controller for SoC
	such as RK3128, RK322x, RK3288, RK3368, RK3366 and etc.
- reg: Should contain SCR registers location and length
- interrupts: Should contain SCR interrupt

Example:
scr: rkscr@20048000 {
	compatible = "rockchip-scr";
	reg = <0x20048000 0x4000>;
	interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>;
};