ipv6: bool/const conversions phase2

Mostly bool conversions, some inline removals and const additions.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index c7a27ac..54f62d3 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -348,7 +348,7 @@
 	struct net_device *dev = neigh->dev;
 	struct inet6_dev *in6_dev;
 	struct neigh_parms *parms;
-	int is_multicast = ipv6_addr_is_multicast(addr);
+	bool is_multicast = ipv6_addr_is_multicast(addr);
 
 	in6_dev = in6_dev_get(dev);
 	if (in6_dev == NULL) {
@@ -725,7 +725,7 @@
 	struct inet6_dev *idev = NULL;
 	struct neighbour *neigh;
 	int dad = ipv6_addr_any(saddr);
-	int inc;
+	bool inc;
 	int is_router = -1;
 
 	if (ipv6_addr_is_multicast(&msg->target)) {