staging: ks7010: use u16 instead of unsigned short in hostif_event_check

Local variable 'event' is declared as unsigned short in hostif_event_check
function. Its value is got calling get_word which returns an 'u16'
so change its type to u16 which is preferred.

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