buildroot

wireshark: security bump to version 2.2.1

Fixes:
wnpa-sec-2016-56 - The Bluetooth L2CAP dissector could crash.
wnpa-sec-2016-57 - The NCP dissector could crash.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>