batman-adv: use consistent kerneldoc style

Reported-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>

diff --cc net/batman-adv/bat_iv_ogm.c
Simple merge

diff --cc net/batman-adv/bridge_loop_avoidance.c
Simple merge

diff --cc net/batman-adv/translation-table.c
Simple merge

diff --cc net/batman-adv/types.h
Simple merge