ieee1394: ieee1394_core.c: use DEFINE_SPINLOCK for spinlock definition

drivers/ieee1394/ieee1394_core.c: Define spinlock using
DEFINE_SPINLOCK instead of assignment to SPIN_LOCK_UNLOCKED

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/ieee1394/ieee1394_core.c

@@ -488,7 +488,7 @@ void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 	highlevel_host_reset(host);
 }
 
-static spinlock_t pending_packets_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(pending_packets_lock);
 
 /**
  * hpsb_packet_sent - notify core of sending a packet