teamd/lacp: silence ignore none LACP frames
teamd/lacp: silence ignore none LACP frames

According to 802.3, Annex 43B, section 4, aside from LACP, the Slow
Protocol linktype is also to be used by other protocols, like 0x02 for
LAMP, 0x03 for OAM. So let's only check LACP frames. For none LACP
protocols, just silence ignore.

Signed-off-by: Hangbin Liu <f18dd0be96fb7338348dc2439a86c9a4ef8ef3b9@gmail.com>
Signed-off-by: Jiri Pirko <1b548d10035ae428195c41f5d55eedb1437ccd8a@mellanox.com>

jpirko/libteam,jpirko/libteam,jpirko/libteam