USB: ohci-s3c2410.c: clock now usb-bus-host

USB: ohci-s3c2410.c: clock now usb-bus-host

With the newer Samsung S3C2412 and S3C2413 SoC devices,
the 48MHz USB clock has been given an individual gate
into the USB OHCI and gadget blocks.

This clock is called usb-bus-clock, and we need to
replace the old use of the USB PLL (upll) directly
with the new usb-bus-host.

The S3C2410 clock driver has been updated already to
provide a virtual clock which is a child of the UPLL
to maintain compatibility. The S3C2412 clock driver
correctly enables the PLL when either usb-bus clock
is active.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>