mb/google/asurada: Implement HW reset function

TEST=call do_board_reset() manually.

Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Change-Id: I355f71e731f1045cd80a133cd31cf4d55f14d91f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49237
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

src/mainboard/google/asurada/reset.c

@@ -1,7 +1,11 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <gpio.h>
 #include <reset.h>
 
+#include "gpio.h"
+
 void do_board_reset(void)
 {
+	gpio_output(GPIO_RESET, 1);
 }