driver core: fw_devlink_flags can be static

Fixes: 8375e74f ("driver core: Add fw_devlink kernel commandline option")
Signed-off-by: kbuild test robot <lkp@intel.com>
Acked-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200305020916.GA14234@3143ef58ba07Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/core.c

@@ -2332,7 +2332,7 @@ static int device_private_init(struct device *dev)
 	return 0;
 }
 
-u32 fw_devlink_flags;
+static u32 fw_devlink_flags;
 static int __init fw_devlink_setup(char *arg)
 {
 	if (!arg)