net: Fix (nearly-)kernel-doc comments for various functions

Fix incorrect start markers, wrapped summary lines, missing section
breaks, incorrect separators, and some name mismatches.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h
index 83990e3..977de9c 100644
--- a/net/batman-adv/hash.h
+++ b/net/batman-adv/hash.h
@@ -81,7 +81,8 @@
 	batadv_hash_destroy(hash);
 }
 
-/*	hash_add - adds data to the hashtable
+/**
+ *	batadv_hash_add - adds data to the hashtable
  *	@hash: storage hash table
  *	@compare: callback to determine if 2 hash elements are identical
  *	@choose: callback calculating the hash index