staging: ks7010: avoid casting inside cpu_to_* assignments

cpu_to_*() functions already have a cast to u* built in,
so the cast is never required. Review and remove all of
them along the code.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>