iwlwifi: pcie: introduce split point to a000 devices

a000 devices are going to have a lot of flows simplified
and changed: init flow, RX, TX, and more.
This, combined with the fact that code is already very
complicated due to backward compatibility - introduce
a split that will enable to introduce simplified version
of functions.
Shared ops are moved to a macro, while functions that will
be updated in the next patches are defined twice for now.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-config.h b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
index 8529634..717e089 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
@@ -323,6 +323,7 @@ struct iwl_pwr_tx_backoff {
  * @vht_mu_mimo_supported: VHT MU-MIMO support
  * @rf_id: need to read rf_id to determine the firmware image
  * @integrated: discrete or integrated
+ * @gen2: a000 and on transport operation
  *
  * We enable the driver to be backward compatible wrt. hardware features.
  * API differences in uCode shouldn't be handled here but through TLVs
@@ -368,7 +369,8 @@ struct iwl_cfg {
 	    vht_mu_mimo_supported:1,
 	    rf_id:1,
 	    integrated:1,
-	    use_tfh:1;
+	    use_tfh:1,
+	    gen2:1;
 	u8 valid_tx_ant;
 	u8 valid_rx_ant;
 	u8 non_shared_ant;