[ARM] S3C64XX: fix HCLK gate defines

A few typos seems to have sneaked into the HCLK gate defines, causing the
usb host clock to not get enabled. Fix them according to the reference
manual and throw in the 3d accel bit for good measure.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>