iwlagn: move all iwl_is_XXX helpers to iwl-shared.h

Logic move after all priv->status moved to struct iwl_shared

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
index e95f9c6..97d03a8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -338,7 +338,7 @@
 		ctx = iwl_rxon_ctx_from_vif(info->control.vif);
 
 	spin_lock_irqsave(&priv->shrd->lock, flags);
-	if (iwl_is_rfkill(priv)) {
+	if (iwl_is_rfkill(priv->shrd)) {
 		IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
 		goto drop_unlock_priv;
 	}