arm64: add sys_arch_reboot() support

If PSCI is enabled, it will leverage psci reset API to achieve system
reboot, otherwise a weak dump reboot API is provided, and platform
can override these APIs if platform specified implementation provided.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>

Author: JiafeiPan

arch/arm64/core/CMakeLists.txt

@@ -9,6 +9,7 @@ zephyr_library_sources(
   irq_init.c
   irq_manage.c
   prep_c.c
+  reboot.c
   reset.S
   reset.c
   switch.S

arch/arm64/core/reboot.c

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2024 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/sys/reboot.h>
+#include <zephyr/drivers/pm_cpu_ops.h>
+
+LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);
+
+#ifdef CONFIG_PM_CPU_OPS_PSCI
+void __weak sys_arch_reboot(int type)
+{
+	unsigned char reset_type;
+
+	if (type == SYS_REBOOT_COLD) {
+		reset_type = SYS_COLD_RESET;
+	} else if (type == SYS_REBOOT_WARM) {
+		reset_type = SYS_WARM_RESET;
+	} else {
+		LOG_ERR("Invalid reboot type");
+		return;
+	}
+	pm_system_reset(reset_type);
+}
+#else
+void __weak sys_arch_reboot(int type)
+{
+	LOG_WRN("%s is not implemented", __func__);
+	ARG_UNUSED(type);
+}
+#endif