rfkill: use DEFINE_SPINLOCK() for spinlock

spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Guobin Huang <huangguobin4@huawei.com>
Link: https://lore.kernel.org/r/1617711116-49370-1-git-send-email-huangguobin4@huawei.comSigned-off-by: Johannes Berg <johannes.berg@intel.com>

net/rfkill/input.c

@@ -36,7 +36,7 @@ module_param_named(master_switch_mode, rfkill_master_switch_mode, uint, 0);
 MODULE_PARM_DESC(master_switch_mode,
 	"SW_RFKILL_ALL ON should: 0=do nothing (only unlock); 1=restore; 2=unblock all");
 
-static spinlock_t rfkill_op_lock;
+static DEFINE_SPINLOCK(rfkill_op_lock);
 static bool rfkill_op_pending;
 static unsigned long rfkill_sw_pending[BITS_TO_LONGS(NUM_RFKILL_TYPES)];
 static unsigned long rfkill_sw_state[BITS_TO_LONGS(NUM_RFKILL_TYPES)];
@@ -330,8 +330,6 @@ int __init rfkill_handler_init(void)
 		return -EINVAL;
 	}
 
-	spin_lock_init(&rfkill_op_lock);
-
 	/* Avoid delay at first schedule */
 	rfkill_last_scheduled =
 			jiffies - msecs_to_jiffies(RFKILL_OPS_DELAY) - 1;