arm: dts: Add all the imx6[q|qp|dl] sabre[auto|sd] u-boot dts[i] files

This allows us to keep the basic dts[i] files up-to-date with
the ones in kernel, but at the same time allowing the u-boot
to add its own properties to the existing nodes.

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
diff --git a/arch/arm/dts/imx6dl-sabresd-u-boot.dtsi b/arch/arm/dts/imx6dl-sabresd-u-boot.dtsi
new file mode 100644
index 0000000..e4d7d28
--- /dev/null
+++ b/arch/arm/dts/imx6dl-sabresd-u-boot.dtsi
@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 NXP
+ */
+
+#include "imx6qdl-sabresd-u-boot.dtsi"