rockchip: Add basic support for jerry

This builds and displays an SPL message, but does not function beyond that.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/cros-ec-sbs.dtsi b/arch/arm/dts/cros-ec-sbs.dtsi
new file mode 100644
index 0000000..3f35d20
--- /dev/null
+++ b/arch/arm/dts/cros-ec-sbs.dtsi
@@ -0,0 +1,16 @@
+/*
+ * Smart battery dts fragment for devices that use cros-ec-sbs
+ *
+ * Copyright (c) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+*/
+
+&i2c_tunnel {
+	battery: sbs-battery@b {
+		compatible = "sbs,sbs-battery";
+		reg = <0xb>;
+		sbs,i2c-retry-count = <2>;
+		sbs,poll-retry-count = <1>;
+	};
+};