*MediaLB (MLB) for i.MX

Required properties:
- compatible :
  - "fsl,imx6sx-mlb50" for MLB compatible with the one integrated on i.MX6SX soc
  - "fsl,imx6q-mlb150" for MLB compatible with the one integrated on i.MX6Q
  - "fsl,imx8qxp-mlb150" for MLB compatible with the one integrated on i.MX8 soc
- reg : address and length for mlb registers
- interrupt-parent : core interrupt controller
- interrupts : MLB Break/Error interrupt and ahb interrupt
	       Two ahb interrupt for imx6, ahb_int[0] and ahb_int[1]
	       One ahb interrupt for imx8, ahb_int[0]
- clocks : mlb clock specifier

Examples:

mlb: mlb@5B060000 {
	compatible = "fsl,imx6q-mlb150";
	reg = <0x0 0x5B060000 0x0 0x10000>;
	interrupt-parent = <&gic>;
	interrupts = <0 265 IRQ_TYPE_LEVEL_HIGH>,
		     <0 266 IRQ_TYPE_LEVEL_HIGH>;
	clocks = <&clk IMX8QM_MLB_CLK>,
		 <&clk IMX8QM_MLB_HCLK>,
		 <&clk IMX8QM_MLB_IPG_CLK>;
	status = "disabled";
};