net: rtnetlink: use BIT for flag values

Use BIT to define flag values.
Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/rtnetlink.h

@@ -10,7 +10,7 @@ typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *,
 typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
 
 enum rtnl_link_flags {
-	RTNL_FLAG_DOIT_UNLOCKED = 1,
+	RTNL_FLAG_DOIT_UNLOCKED = BIT(0),
 };
 
 enum rtnl_kinds {