ARM: mstar: Add chip level dtsi for SSD202D

Add a chip level dtsi for the SigmaStar SSD202D

Signed-off-by: Daniel Palmer <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]'
Signed-off-by: Arnd Bergmann <[e-mail]>

arch/arm/boot/dts/mstar-infinity2m-ssd202d.dtsi

···
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 thingy.jp.
+ * Author: Daniel Palmer <[e-mail]>
+ */
+
+#include "mstar-infinity2m-ssd20xd.dtsi"
+
+/ {
+	memory {
+		device_type = "memory";
+		reg = <0x20000000 0x8000000>;
+	};
+};