rockchip: board.c: support reboot stess test

It's a way to test system stability before kernel stages.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I6679fbbbaa7233750b409b6b832849d8dbd36893

arch/arm/mach-rockchip/Kconfig

@@ -777,6 +777,12 @@ config ROCKCHIP_UART_MUX_SEL_M
 	help
 	  This select uart multiplexer for debug uart iomux in board_debug_uart_init.
 
+config ROCKCHIP_REBOOT_TEST
+	bool "Rockchip reboot stress test before kernel"
+	default n
+	help
+	  It's a reboot stress test before kernel stages.
+
 config BASE_DEFCONFIG
 	string "Base defconfig of config fragment"
 	default ""

arch/arm/mach-rockchip/board.c

@@ -912,6 +912,10 @@ void board_quiesce_devices(void *images)
 	atags_destroy();
 #endif
 
+#ifdef CONFIG_ROCKCHIP_REBOOT_TEST
+	do_reset(NULL, 0, 0, NULL);
+#endif
+
 #ifdef CONFIG_FIT_ROLLBACK_PROTECT
 	int ret;