[blackbox] update drivers and kernel
HDMI-cec
Recording on scrambled channels
PiP
DVB-T Tuner improvments
DVB-S2 tuner improvments
RCU
Acceleration and Speed
[vuplus] driver update (Solo2/Duo2) 20140424

 - Fix multichannel audio problem.
Merge remote-tracking branch 'upstream/2.1' into 2.1