[SUNZILOG]: Fix off-by-1 in spinlock initialization loop.

drivers/serial/sunzilog.c

@@ -1484,7 +1484,7 @@ static void __init sunzilog_prepare(void)
 	/*
 	 * Temporary fix.
 	 */
-	for (channel = 0; channel < NUM_CHANNELS - 1; channel++)
+	for (channel = 0; channel < NUM_CHANNELS; channel++)
 		spin_lock_init(&sunzilog_port_table[channel].port.lock);
 
 	sunzilog_irq_chain = up = &sunzilog_port_table[0];