from viro NE17-sk16
	* switched sk_g16 to dynamic allocation
	* sk_g16: embedded ->priv
	* sk_g16: fixed buggy check for signature (|| instead of &&, somebody
	  forgot to replace it when inverting the test).
	* sk_g16: fixed use after kfree()
	* sk_g16: fixed init_etherdev() race
Additional:
	* add free_netdev