staging: ks7010: use ether_addr_copy in ks_wlan_get_wap

Use ether_addr_copy to copy ethernet addresses instead
of a custom memcpy. This improves readability.

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