dt: Move device tree documentation out of powerpc directory

The device tree is used by more than just PowerPC.  Make the documentation
directory available to all.

v2: reorganized files while moving to create arch and driver specific
    directories.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

1 files changed, 0 insertions, 60 deletions

diff --git a/Documentation/powerpc/dts-bindings/fsl/8xxx_gpio.txt b/Documentation/powerpc/dts-bindings/fsl/8xxx_gpio.txt
deleted file mode 100644
index b0019eb..0000000
--- a/Documentation/powerpc/dts-bindings/fsl/8xxx_gpio.txt
+++ /dev/null
@@ -1,60 +0,0 @@
-GPIO controllers on MPC8xxx SoCs
-
-This is for the non-QE/CPM/GUTs GPIO controllers as found on
-8349, 8572, 8610 and compatible.
-
-Every GPIO controller node must have #gpio-cells property defined,
-this information will be used to translate gpio-specifiers.
-
-Required properties:
-- compatible : "fsl,<CHIP>-gpio" followed by "fsl,mpc8349-gpio" for
-  83xx, "fsl,mpc8572-gpio" for 85xx and "fsl,mpc8610-gpio" for 86xx.
-- #gpio-cells : Should be two. The first cell is the pin number and the
-  second cell is used to specify optional parameters (currently unused).
- - interrupts : Interrupt mapping for GPIO IRQ.
- - interrupt-parent : Phandle for the interrupt controller that
-   services interrupts for this device.
-- gpio-controller : Marks the port as GPIO controller.
-
-Example of gpio-controller nodes for a MPC8347 SoC:
-
-	gpio1: gpio-controller@c00 {
-		#gpio-cells = <2>;
-		compatible = "fsl,mpc8347-gpio", "fsl,mpc8349-gpio";
-		reg = <0xc00 0x100>;
-		interrupts = <74 0x8>;
-		interrupt-parent = <&ipic>;
-		gpio-controller;
-	};
-
-	gpio2: gpio-controller@d00 {
-		#gpio-cells = <2>;
-		compatible = "fsl,mpc8347-gpio", "fsl,mpc8349-gpio";
-		reg = <0xd00 0x100>;
-		interrupts = <75 0x8>;
-		interrupt-parent = <&ipic>;
-		gpio-controller;
-	};
-
-See booting-without-of.txt for details of how to specify GPIO
-information for devices.
-
-To use GPIO pins as interrupt sources for peripherals, specify the
-GPIO controller as the interrupt parent and define GPIO number +
-trigger mode using the interrupts property, which is defined like
-this:
-
-interrupts = <number trigger>, where:
- - number: GPIO pin (0..31)
- - trigger: trigger mode:
-	2 = trigger on falling edge
-	3 = trigger on both edges
-
-Example of device using this is:
-
-	funkyfpga@0 {
-		compatible = "funky-fpga";
-		...
-		interrupts = <4 3>;
-		interrupt-parent = <&gpio1>;
-	};