wifi: iwlwifi: fw: file: clean up kernel-doc

Add missing kernel-doc and otherwise fix things.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240208185302.c41fddd32c18.I1978ed9aa0484b37504f2bd4614ae0f620821f81@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>