ieee1394: nodemgr: fix startup of knodemgrd

Revert a thinko in commit d2f119fe:
When knodemgrd starts, it needs to sleep until host->generation was
incremented above its initial value of 0.  My wrong logic caused it to
start sending requests when the bus wasn't completely ready.  Seen as
"AT dma reset ctx=0, aborting transmission" messages in 2.6.19-rc1.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/ieee1394/nodemgr.c

@@ -1614,7 +1614,7 @@ static int nodemgr_host_thread(void *__hi)
 {
 	struct host_info *hi = (struct host_info *)__hi;
 	struct hpsb_host *host = hi->host;
-	unsigned int g, generation = get_hpsb_generation(host) - 1;
+	unsigned int g, generation = 0;
 	int i, reset_cycles = 0;
 
 	/* Setup our device-model entries */