* Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX

Required properties:
- compatible :
  - "fsl,imx1-i2c" for I2C compatible with the one integrated on i.MX1 SoC
  - "fsl,imx21-i2c" for I2C compatible with the one integrated on i.MX21 SoC
  - "fsl,vf610-i2c" for I2C compatible with the one integrated on Vybrid vf610 SoC
- reg : Should contain I2C/HS-I2C registers location and length
- interrupts : Should contain I2C/HS-I2C interrupt

Optional properties:
- clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz.
  The absence of the propoerty indicates the default frequency 100 kHz.

Examples:

i2c@83fc4000 { /* I2C2 on i.MX51 */
	compatible = "fsl,imx51-i2c", "fsl,imx21-i2c";
	reg = <0x83fc4000 0x4000>;
	interrupts = <63>;
};

i2c@70038000 { /* HS-I2C on i.MX51 */
	compatible = "fsl,imx51-i2c", "fsl,imx21-i2c";
	reg = <0x70038000 0x4000>;
	interrupts = <64>;
	clock-frequency = <400000>;
};