iwlegacy: rename iwl-core.h to common.h

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c
index dbe5bf2..2f747e4 100644
--- a/drivers/net/wireless/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/iwlegacy/4965-mac.c
@@ -52,7 +52,7 @@
 
 #include "iwl-eeprom.h"
 #include "iwl-dev.h"
-#include "iwl-core.h"
+#include "common.h"
 #include "iwl-io.h"
 #include "iwl-helpers.h"
 #include "iwl-sta.h"