arch/tricore: initialize spinlock used by tricore systimer

Add explicit spin_lock_init in tricore_systimer_initialize() for the lock used by tricore systimer.

Signed-off-by: Haokun Dong <donghaokun@lixiang.com>

Author: Lenoids

arch/tricore/src/common/tricore_systimer.c

@@ -303,6 +303,7 @@ tricore_systimer_initialize(volatile void *tbase, int irq, uint64_t freq)
   struct tricore_systimer_lowerhalf_s *priv = &g_tricore_oneshot_lowerhalf;
 
   priv->tbase = tbase;
+  spin_lock_init(&priv->lock);
 
   ASSERT(freq <= UINT32_MAX);