fmc-bus has been replaced by a simpler platform driver, this means
that:
- IRQ needs to come through the standard kernel API
- Calibration data cannot be read from the fmc-bus, the user (through an
  udev rule for example) should pass this information to the driver
  instance. By default the card will run uncalibrated.
- registration must happen by other means and not from fmc-bus like
  before.
- FPGA must be programmed before, the driver cannot do it anymore
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>