batman-adv: fix alignment for batadv_tvlv_tt_change

Make struct batadv_tvlv_tt_change a multiple 4 bytes long
to avoid padding on any architecture.

Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>

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

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