Hi.

This patch add support for a new 'System on Chip' or SoC bus type.

This allows common drivers used in different SoC devices to be shared in 
a clean and healthy manner, for example, the MMC function on toshiba 
t7l66xb, tc6393xb, and Compaq IPAQ ASIC3.

This is in common use in the handhelds.org CVS tree.

The only real issue is that drivers using this currently tend to assume 
that the SoC is attached to a platfrom_bus. This can be resolved as and 
when it becomes an issue for people.

Please apply.