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Fujitsu MB86S7x GPIO Controller
-------------------------------

Required properties:
- compatible: Should be "fujitsu,mb86s70-gpio"
- reg: Base address and length of register space
- clocks: Specify the clock
- gpio-controller: Marks the device node as a gpio controller.
- #gpio-cells: Should be <2>. The first cell is the pin number and the
  second cell is used to specify optional parameters:
   - bit 0 specifies polarity (0 for normal, 1 for inverted).

Examples:
	gpio0: gpio@31000000 {
		compatible = "fujitsu,mb86s70-gpio";
		reg = <0 0x31000000 0x10000>;
		gpio-controller;
		#gpio-cells = <2>;
		clocks = <&clk 0 2 1>;
	};