wifi: iwlwifi: mvm: implement EMLSR prevention mechanism.

Address scenarios where repeated entry and exit from EMLSR occur, such as
encountering missed beacons on a specific link,
while still discovering that link during a scan.

To mitigate this, introduce the EMLSR prevention mechanism, which operates
as follows:
- On each exit from EMLSR event, record the timestamp and the exit
  reason.
- If two consecutive exits happen for the same reason within a
  400-second window, enforce a 300-second EMLSR prevention.
- If a third exit for the same reason occurs within 400 seconds from the
  second exit, enforce an extended EMLSR prevention of 600 seconds.

Signed-off-by: Miri Korenblit <[email protected]>
Reviewed-by: Johannes Berg <[email protected]>
Link: https://msgid.link/20240416134215.d820ee98b300.I6406db40cf25eabdba602afd783466473b909216@changeid
Signed-off-by: Johannes Berg <[email protected]>

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