MAINTAINERS: fix bouncing tun/tap entries

Delivery to the following recipient failed permanently:

     vtun@office.satix.net

Technical details of permanent failure:
DNS Error: Domain name not found

Of course:
$ host office.satix.net
Host office.satix.net not found: 3(NXDOMAIN)

===========

And "Change of Email Address Notification":
Old Address        New Address           Email Subject
------------------------------------------------------
maxk@qualcomm.com  maxk@qti.qualcomm.com "tuntap: multiqueue...

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Maxim Krasnyansky <maxk@qti.qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>