[PATCH] i2c-ibm_iic driver - new patch

Second attempt. I think I have covered all the comments. It now should 
work with both ppc and powerpc architectures.

You can now specify fast-mode in the .dts file.

You can now specify an index for each entry.  If you don't I try to 
chose reasonable defaults. i.e. I keep a static int that is incremented. 
If you mix index entries with non-index entries, you are on your own.

Below is the example for the taco, I have shown fast-mode set in IIC1 as 
an example:

            IIC0: i2c@ef600700 {
                device_type = "i2c";
                compatible = "ibm,iic-440ep", "ibm,iic-440gp", "ibm,iic";
                reg = <ef600700 14>;
                interrupt-parent = <&UIC0>;
                interrupts = <2 4>;
                index = <0>;
            };

            IIC1: i2c@ef600800 {
                device_type = "i2c";
                compatible = "ibm,iic-440ep", "ibm,iic-440gp", "ibm,iic";
                reg = <ef600800 14>;
                interrupt-parent = <&UIC0>;
                interrupts = <7 4>;
                index = <1>;
                fast-mode;
            };

Cheers,
   Sean