* Board Control and Status (BCSR)

Required properties:

 - compatible : Should be "fsl,<board>-bcsr"
 - reg : Offset and length of the register set for the device

Example:

	bcsr@f8000000 {
		compatible = "fsl,mpc8360mds-bcsr";
		reg = <f8000000 8000>;
	};

* Freescale on board FPGA

This is the memory-mapped registers for on board FPGA.

Required properities:
- compatible : should be "fsl,fpga-pixis".
- reg : should contain the address and the lenght of the FPPGA register
  set.

Example (MPC8610HPCD):

	board-control@e8000000 {
		compatible = "fsl,fpga-pixis";
		reg = <0xe8000000 32>;
	};

* Board Control and Status (BCSR)

Required properties:

 - compatible : Should be "fsl,<board>-bcsr"
 - reg : Offset and length of the register set for the device

Example:

	bcsr@f8000000 {
		compatible = "fsl,mpc8360mds-bcsr";
		reg = <f8000000 8000>;
	};

* Freescale on board FPGA

This is the memory-mapped registers for on board FPGA.

Required properities:
- compatible : should be "fsl,fpga-pixis".
- reg : should contain the address and the length of the FPPGA register
  set.

Example (MPC8610HPCD):

	board-control@e8000000 {
		compatible = "fsl,fpga-pixis";
		reg = <0xe8000000 32>;
	};

* Freescale BCSR GPIO banks

Some BCSR registers act as simple GPIO controllers, each such
register can be represented by the gpio-controller node.

Required properities:
- compatible : Should be "fsl,<board>-bcsr-gpio".
- reg : Should contain the address and the length of the GPIO bank
  register.
- #gpio-cells : Should be two. The first cell is the pin number and the
  second cell is used to specify optional paramters (currently unused).
- gpio-controller : Marks the port as GPIO controller.

Example:

	bcsr@1,0 {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "fsl,mpc8360mds-bcsr";
		reg = <1 0 0x8000>;
		ranges = <0 1 0 0x8000>;

		bcsr13: gpio-controller@d {
			#gpio-cells = <2>;
			compatible = "fsl,mpc8360mds-bcsr-gpio";
			reg = <0xd 1>;
			gpio-controller;
		};
	};

Add device tree bindings for BCSR GPIO banks
powerpc: Add device tree bindings for BCSR GPIO banks

The patch adds bindings for BCSR GPIO banks, the bindings are used to
describe particular BCSR registers that act as simple GPIO controllers.
These GPIO banks might control power switches, SPI chip-selects, LEDs,
etc.

While at it, also fix "length" spelling error in the PIXIS FPGA
bindings.

Signed-off-by: Anton Vorontsov <f72eea26502475052d15bdce621d2155da84f214@ru.mvista.com>
Signed-off-by: Kumar Gala <383ef5577c6e1178b93f59ec8d0936f76d2a98c4@kernel.crashing.org>
