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

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
diff --git a/drivers/net/wireless/iwlegacy/iwl-debugfs.c b/drivers/net/wireless/iwlegacy/iwl-debugfs.c
index 3f6b06e..6c4bc50 100644
--- a/drivers/net/wireless/iwlegacy/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlegacy/iwl-debugfs.c
@@ -31,7 +31,7 @@
 
 #include "iwl-dev.h"
 #include "iwl-debug.h"
-#include "iwl-core.h"
+#include "common.h"
 #include "iwl-io.h"
 
 /* create and remove of files */