sysreset: socfpga: stratix10: add sysreset driver

This adds a UCLASS_SYSRESET sysreset driver for socfgpa stratix10.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
diff --git a/drivers/sysreset/sysreset_socfpga_s10.c b/drivers/sysreset/sysreset_socfpga_s10.c
new file mode 100644
index 0000000..9837aad
--- /dev/null
+++ b/drivers/sysreset/sysreset_socfpga_s10.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Pepperl+Fuchs
+ * Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/arch/mailbox_s10.h>
+
+static int socfpga_sysreset_request(struct udevice *dev,
+				    enum sysreset_t type)
+{
+	puts("Mailbox: Issuing mailbox cmd REBOOT_HPS\n");
+	mbox_reset_cold();
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops socfpga_sysreset = {
+	.request = socfpga_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_socfpga) = {
+	.id	= UCLASS_SYSRESET,
+	.name	= "socfpga_sysreset",
+	.ops	= &socfpga_sysreset,
+};