Firmware loading may reset the controller UART speed and needs to set
host UART speed back to init speed.

UART drivers setup is split in 3 parts:
- btbcm_initialize() resets the controller and returns the firmware
  name based on controller revision and sub_version.
- btbtcm_patchram() (already existing and public), which takes the
  firmware name as parameter, requests the firmware and loads it to
  the controller.
- btbcm_finalize() which resets the controller, reads local version
  and checks if the controller address is a default one or not.

Remove firmware name retrieval for UART controllers from
btbcm_setup_patchram().
Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>