Input: atkbd - add keyboard quirk for HP Pavilion ZV6100 laptop

Add quirk for misbehaving volume buttons on HP Pavilion ZV6100 laptop which
are not sending keyrelease events, as reported by Aaron Pickett.

Signed-off-by: Rikard Ljungstrand <lrikard@student.chalmers.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>