batman-adv: Prefix hash non-static functions with batadv_

batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/hash.c b/net/batman-adv/hash.c
index 5b2eabe..65bbd15 100644
--- a/net/batman-adv/hash.c
+++ b/net/batman-adv/hash.c
@@ -34,7 +34,7 @@
 }
 
 /* free only the hashtable and the hash itself. */
-void hash_destroy(struct hashtable_t *hash)
+void batadv_hash_destroy(struct hashtable_t *hash)
 {
 	kfree(hash->list_locks);
 	kfree(hash->table);
@@ -42,7 +42,7 @@
 }
 
 /* allocates and clears the hash */
-struct hashtable_t *hash_new(uint32_t size)
+struct hashtable_t *batadv_hash_new(uint32_t size)
 {
 	struct hashtable_t *hash;