Currently, driver drops BTM frames in unsupported cases,
e.g. connected to MBO AP without PMF capability, concurrent P2P
session present which doesn't allow STA roaming.
Add connectivity log support and indicate the reason for BTM
drop/block.
Define interface for userspace as below,
New subtype: WLAN_CONN_DIAG_BTM_BLOCK_EVENT
New enum to fill sub_reason for BTM_BLOCK_EVENT type
Change-Id: I87115da57d275a94c5ae69252ec09bcad698e47c
CRs-Fixed: 3699042
2021b8ee2c