iwlwifi: mvm: align CSA GO NOA time event naming with the firmware

The time event used for CSA GO will also be used by CSA client.
Rename the symbols to something more generic and aligned with the
firmware code.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>