iwlwifi: move iwl_cfg from iwl_priv to iwl_shared

Move the configuration pointer from the upper level iwl_priv to the
lower level iwl_shared structure, with associated code fixes.

Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index a23835a..bc0c924 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -1086,7 +1086,7 @@
 	    (priv->tm_fixed_rate != lq_sta->dbg_fixed_rate))
 		rs_program_fix_rate(priv, lq_sta);
 #endif
-	if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist)
+	if (cfg(priv)->bt_params && cfg(priv)->bt_params->advanced_bt_coexist)
 		rs_bt_update_lq(priv, ctx, lq_sta);
 }
 
@@ -3055,11 +3055,11 @@
 	 * overwrite if needed, pass aggregation time limit
 	 * to uCode in uSec
 	 */
-	if (priv && priv->cfg->bt_params &&
-	    priv->cfg->bt_params->agg_time_limit &&
+	if (priv && cfg(priv)->bt_params &&
+	    cfg(priv)->bt_params->agg_time_limit &&
 	    priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 		lq_cmd->agg_params.agg_time_limit =
-			cpu_to_le16(priv->cfg->bt_params->agg_time_limit);
+			cpu_to_le16(cfg(priv)->bt_params->agg_time_limit);
 }
 
 static void *rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)