imx: imx6ul: kontron-sl-mx6ul: Sync devicetrees

Sync the devicetrees with Linux and adjust the board names.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
diff --git a/arch/arm/dts/imx6ull-kontron-sl.dtsi b/arch/arm/dts/imx6ull-kontron-sl.dtsi
new file mode 100644
index 0000000..93f10eb
--- /dev/null
+++ b/arch/arm/dts/imx6ull-kontron-sl.dtsi
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2017 exceet electronics GmbH
+ * Copyright (C) 2018 Kontron Electronics GmbH
+ */
+
+#include "imx6ull.dtsi"
+#include "imx6ul-kontron-sl-common.dtsi"
+
+/ {
+	model = "Kontron SL i.MX6ULL (N641X SOM)";
+	compatible = "kontron,sl-imx6ull", "fsl,imx6ull";
+};