In MLO cases, system enters into runtime suspend in
between the disconnect processing of two links. This
leads to delay/timeouts in MLO disconnect processing.
To fix this, acquire runtime lock between disconnect
start and disconnect complete if_manager events.
Keep the runtime lock at vdev level to handle async
disconnects triggered by the driver and link-only
disconnects during roaming.
CRs-Fixed: 3588246
Change-Id: Ida48127d8597aecd8b6f5347c70ba5e9a2045d11
f3969f6436