iwlwifi: mvm: BT Coex - send channel inhibition before association

The firmware needs to know on what channel we run before we
set the association bit in the MAC context. Change a bit the
flow to achieve this.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --cc drivers/net/wireless/iwlwifi/mvm/coex.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/mvm/mac80211.c
Simple merge