pico-imx6: Add initial support

Add the initial support for the pico-imx6 variants.

DDR initialization is based on the TechNexion's U-Boot code.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/arch/arm/dts/imx6q-pico.dts b/arch/arm/dts/imx6q-pico.dts
new file mode 100644
index 0000000..bfc6f9c
--- /dev/null
+++ b/arch/arm/dts/imx6q-pico.dts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright 2018 Technexion Ltd.
+//
+// Author: Wig Cheng <wig.cheng@technexion.com>
+//	   Richard Hu <richard.hu@technexion.com>
+//	   Tapani Utriainen <tapani@technexion.com>
+
+/dts-v1/;
+
+#include "imx6q.dtsi"
+#include "imx6qdl-pico.dtsi"
+
+/ {
+	model = "TechNexion PICO-IMX6 Quad";
+	compatible = "technexion,imx6q-pico", "fsl,imx6q";
+};