Add a platform data helper for the OHCI device
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Prepare for the forthcoming device changes by renaming s3c_device_usb to
s3c_device_ohci as this is what the device represents.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Move all the platform device definitions from plat-s3c into plat-samsung
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The USB host base address is available on both the S3C24XX and S3C64XX
ranges.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add common definition for USB OHCI platform device, add a Kconfig
to selectively compile it and add update all the users.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>