staging: ks7010: replace casts to use type u16 in init_request

There are soem assignments inside init_request function which
are being used together with cpu_to_le16 using uint16_t as cast
type. Replace all of them to use 'u16' instead.

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