[NET]: Convert init_timer into setup_timer

Many-many code in the kernel initialized the timer->function
and  timer->data together with calling init_timer(timer). There
is already a helper for this. Use it for networking code.

The patch is HUGE, but makes the code 130 lines shorter
(98 insertions(+), 228 deletions(-)).

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/flow.c b/net/core/flow.c
index 6489f4e..46b38e0 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -352,8 +352,7 @@
 	flow_lwm = 2 * flow_hash_size;
 	flow_hwm = 4 * flow_hash_size;
 
-	init_timer(&flow_hash_rnd_timer);
-	flow_hash_rnd_timer.function = flow_cache_new_hashrnd;
+	setup_timer(&flow_hash_rnd_timer, flow_cache_new_hashrnd, 0);
 	flow_hash_rnd_timer.expires = jiffies + FLOW_HASH_RND_PERIOD;
 	add_timer(&flow_hash_rnd_timer);