staging: ks7010: replace some custom defines with the ones in uapi/linux/if_ether.h

This commit reviews some custom defines changing them for the
globals defined in if_ether header file.

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