Patch from Richard Purdie

Add common driver code for the SCOOP I/O interface found on various 
Sharp PDAs (Collie, Poodle and Corgi models). It will be used by 
both SA1100 and PXA machines. 

[A patch to update Collie to use this driver will follow.]

Signed-off-by: Richard Purdie
Signed-off-by: Russell King