add support for bcm4505 based dforum-s2 tuner add support for new cxd1981 based DVB-C/T tuner
all broadcom based dreamboxes
----------------------------- add support for new cxd1981 based DVB-C/T tuner fix vtuner support (internal memory corruption) allow disable the fan in standby mode again allow lower fan speeds in non standby fixed buffer underruns on H264 live decode fixed buffer underruns on AAC-HE live decode