iwlwifi: s/iwl_ucode_callback/iwl_req_fw_callback

This name emphasizes more the role of the function: the
callback called when the ASYNC call to request_firmware
completes.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 files changed