wlan: register frames on the iff up

Frames for the p2p are registered previously on the
driver load, with the new changes to create session
on the interface up this registration will not happen
resulting in dropping of few action frames.

Move management frame registration to interface up.

Change-Id: I39c0035bba3e2fe9ab316d752b48acde13faacb5
CRs-Fixed: 2746365