Qualcomm MDSS MDP

MDSS is Mobile Display SubSystem which implements Linux framebuffer APIs to
drive user interface to different panel interfaces. MDP driver is the core of
MDSS which manage all data paths to different panel interfaces.

Required properties
- compatible :		Must be "qcom,mdss_mdp"
- reg :			offset and length of the register set for the device.
- reg-names :		names to refer to register sets related to this device
- interrupts :		Interrupt associated with MDSS.
- vdd-supply :		Phandle for vdd regulator device node.

Example:
	qcom,mdss_mdp@fd900000 {
		compatible = "qcom,mdss_mdp";
		reg = <0xfd900000 0x22100>,
			<0xfd924000 0x1000>;
		reg-names = "mdp_phys", "vbif_phys";
		interrupts = <0 72 0>;
		vdd-supply = <&gdsc_mdss>;
	};