iwlwifi: mvm: rs: clear per rate stats when aggregation changes

iwlwifi: mvm: rs: clear per rate stats when aggregation changes

commit b804eeb6649d75caeccbeae9f5623fc7b8bdfdfa upstream.

The per rate stats should be cleared when aggregation state changes
to avoid making rate scale decisions based on throughput figures which
were collected prior to the aggregation state change and are now stale.
While at it make sure any clearing of the per rate stats will get logged.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>