net: Replace old style lock initializer

SPIN_LOCK_UNLOCKED is deprecated. Use DEFINE_SPINLOCK instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 0a113f2..b8e9d3a 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -41,7 +41,7 @@
  * netlink alerts
  */
 static int trace_state = TRACE_OFF;
-static spinlock_t trace_state_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(trace_state_lock);
 
 struct per_cpu_dm_data {
 	struct work_struct dm_alert_work;