powerpc/fsl: Add/update miscellaneous missing binding

Freescale L2 Cache Controller

L2 cache is present in Freescale's QorIQ and QorIQ Qonverge platforms.

The cache bindings explained below are ePAPR compliant

Required Properties:

- compatible	: Should include "fsl,chip-l2-cache-controller" and "cache"

		  where chip is the processor (bsc9132, npc8572 etc.)

- reg		: Address and size of L2 cache controller registers

- cache-size	: Size of the entire L2 cache

- interrupts	: Error interrupt of L2 controller

- cache-line-size : Size of L2 cache lines

Example:

	L2: l2-cache-controller@20000 {

		compatible = "fsl,bsc9132-l2-cache-controller", "cache";

		reg = <0x20000 0x1000>;

		cache-line-size = <32>; // 32 bytes

		cache-size = <0x40000>; // L2,256K

		interrupts = <16 2 1 0>;

	};

Freescale DDR memory controller

Properties:

- compatible	: Should include "fsl,chip-memory-controller" where

		  chip is the processor (bsc9132, mpc8572 etc.), or

		  "fsl,qoriq-memory-controller".

- reg		: Address and size of DDR controller registers

- interrupts	: Error interrupt of DDR controller

Example 1:

	memory-controller@2000 {

		compatible = "fsl,bsc9132-memory-controller";

		reg = <0x2000 0x1000>;

		interrupts = <16 2 1 8>;

	};

Example 2:

	ddr1: memory-controller@8000 {

		compatible = "fsl,qoriq-memory-controller-v4.7",

				"fsl,qoriq-memory-controller";

		reg = <0x8000 0x1000>;

		interrupts = <16 2 1 23>;

	};

Required properties :

 - compatible : Should be "fsl-usb2-mph" for multi port host USB

   controllers, or "fsl-usb2-dr" for dual role USB controllers

   or "fsl,mpc5121-usb2-dr" for dual role USB controllers of MPC5121

   or "fsl,mpc5121-usb2-dr" for dual role USB controllers of MPC5121.

   Wherever applicable, the IP version of the USB controller should

   also be mentioned (for eg. fsl-usb2-dr-v2.2 for bsc9132).

 - phy_type : For multi port host USB controllers, should be one of

   "ulpi", or "serial". For dual role USB controllers, should be

   one of "ulpi", "utmi", "utmi_wide", or "serial".