Qualcomm Atheros AR724x PCI

Qualcomm Atheros AR724x PCI root complex

Required properties:
  - compatible: should be "qca, ar724x-pci"
  - reg: should contain PCIe register maps.
  - reg-names: indicates various resources passed to driver by name.
		Should be "cfg_base", "ctrl_base", "crp_base", "mem_base", "io_base".
		These correspond to different modules within the PCIe core.
  - interrupts: Should be in the format <0> and it is an index to the
		interrupt-map that contains PCIe related interrupts.
  - interrupt-parent: Indicates the interrupt controller where the PCI interrupt
			belongs.

Example:

	pci: pci@0x16000000 {
		compatible = "qca,ar724x-pci";
		reg = <0x16000000 0x1000>,
			<0x18280000 0x100>,
			<0x18250000 0x1000>,
			<0x12000000 0x02000000>,
			<1 1>;
		reg-names = "cfg_base","ctrl_base","crp_base",
				"mem_base","io_base";
		interrupt-parent = <&ip2_int>;
		interrupts = <0>;
		status = "okay";
	};