file_operations: get back C89 compatible initializer

Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>

drivers/wireless/cc1101.c

@@ -306,8 +306,7 @@ static const struct file_operations g_cc1101ops =
   NULL,              /* ioctl */
   cc1101_file_poll   /* poll */
 #ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
-  ,
-  NULL               /* unlink */
+  , NULL             /* unlink */
 #endif
 };