iwlegacy: rename remaining IWLs to ILs

Also rename config names IWLWIFI_LEGACY to IWLEGACY

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
diff --git a/drivers/net/wireless/iwlegacy/iwl-sta.c b/drivers/net/wireless/iwlegacy/iwl-sta.c
index cca467c..68c43b0 100644
--- a/drivers/net/wireless/iwlegacy/iwl-sta.c
+++ b/drivers/net/wireless/iwlegacy/iwl-sta.c
@@ -681,7 +681,7 @@
 }
 EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations);
 
-#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
+#ifdef CONFIG_IWLEGACY_DEBUG
 static void il_dump_lq_cmd(struct il_priv *il,
 			   struct il_link_quality_cmd *lq)
 {