V4L/DVB: mfd: Add timb-radio to the timberdale MFD

This patch addes timb-radio to all configurations of the timberdale MFD.

Connected to the FPGA is a TEF6862 tuner and a SAA7706H DSP, the I2C
board info of these devices is passed via the timb-radio platform data.

Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Cc: sameo@linux.intel.com
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>