iwlwifi: mvm: Update BEACON_TEMPLATE_CMD firmware API

The new API version adds support for FILS discovery frames.
It adds a new flag and a field for short SSID configuration.
The new API is backward compatible, so we can just switch to it.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>