netlabel: Mark rcu pointers with __rcu.

This fixes sparse errors of the form:
  incompatible types in comparison expression (different address spaces)
Signed-off-by: NHuw Davies <huw@codeweavers.com>
Signed-off-by: NPaul Moore <paul@paul-moore.com>

net/netlabel/netlabel_domainhash.c

@@ -55,8 +55,8 @@ struct netlbl_domhsh_tbl {
 static DEFINE_SPINLOCK(netlbl_domhsh_lock);
 #define netlbl_domhsh_rcu_deref(p) \
 	rcu_dereference_check(p, lockdep_is_held(&netlbl_domhsh_lock))
-static struct netlbl_domhsh_tbl *netlbl_domhsh;
-static struct netlbl_dom_map *netlbl_domhsh_def;
+static struct netlbl_domhsh_tbl __rcu *netlbl_domhsh;
+static struct netlbl_dom_map __rcu *netlbl_domhsh_def;
 
 /*
  * Domain Hash Table Helper Functions

net/netlabel/netlabel_unlabeled.c

@@ -116,8 +116,8 @@ struct netlbl_unlhsh_walk_arg {
 static DEFINE_SPINLOCK(netlbl_unlhsh_lock);
 #define netlbl_unlhsh_rcu_deref(p) \
 	rcu_dereference_check(p, lockdep_is_held(&netlbl_unlhsh_lock))
-static struct netlbl_unlhsh_tbl *netlbl_unlhsh;
-static struct netlbl_unlhsh_iface *netlbl_unlhsh_def;
+static struct netlbl_unlhsh_tbl __rcu *netlbl_unlhsh;
+static struct netlbl_unlhsh_iface __rcu *netlbl_unlhsh_def;
 
 /* Accept unlabeled packets flag */
 static u8 netlabel_unlabel_acceptflg;