firmware-samsung-dream: add MFC firmware
Otherwise there is a 3 min delay until we can ssh into the device.
Same issue as on samsung-crownlte, where @rom4nik investigated and found the solution: !4176 (merged).
Note that the display does not work for dreamlte and dream2lte at the moment, the device gets stuck on the pmos boot splash screen. This issue is tracked in #2102 (closed).