staging: ks7010: use ether_addr_copy in get_ap_information function

This commit make use of ether_addr_copy to copy ethernet
address instead of copy it using memcpy.

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