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-3945-rs.c b/drivers/net/wireless/iwlegacy/iwl-3945-rs.c
index afa6be8..345beb7 100644
--- a/drivers/net/wireless/iwlegacy/iwl-3945-rs.c
+++ b/drivers/net/wireless/iwlegacy/iwl-3945-rs.c
@@ -90,7 +90,7 @@
 #define IL_RATE_MAX_WINDOW          62
 #define IL_RATE_FLUSH		(3*HZ)
 #define IL_RATE_WIN_FLUSH       (HZ/2)
-#define IWL39_RATE_HIGH_TH          11520
+#define IL39_RATE_HIGH_TH          11520
 #define IL_SUCCESS_UP_TH	   8960
 #define IL_SUCCESS_DOWN_TH	  10880
 #define IL_RATE_MIN_FAILURE_TH       6