wifi: iwlwifi: mvm: rename and move iwl_mvm_eval_dsm_rfi() to iwl_rfi_is_enabled_in_b...

wifi: iwlwifi: mvm: rename and move iwl_mvm_eval_dsm_rfi() to iwl_rfi_is_enabled_in_bios()

Renamed iwl_mvm_eval_dsm_rfi() to iwl_rfi_is_enabled_in_bios() to better
reflect the function's operation. Additionally, moved the function to the
regulatory.c file for better organization. optimize local variable
usage in it.

Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250205145347.b7ac9d05234e.Ieb623d7e8dca6bb6a5733682b31e4ff1e39373f0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>