[media] fix A-Link DTU(m) remote controller PIP button

Button is PIP => KEY_NEW
http://www.linuxtv.org/wiki/index.php/Remote_Controllers



Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>