batman-adv: improve the TT flags documentation
batman-adv: improve the TT flags documentation

Convert the current documentation for the TT flags in proper
kerneldoc and improve it by adding an explanation for each
of the flags.

Signed-off-by: Antonio Quartulli <a08f08bac39aeae6c9580ade7aa8387b5a0e7428@open-mesh.com>
Signed-off-by: Marek Lindner <5760fd64db566c47bfb7ce809fea1d3e512880cf@neomailbox.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs