arm: imx: add i.MX53 Beckhoff CX9020 Embedded PC

Add CX9020 board based on mx53loco.
Add simplified imx53 base device tree from kernel v4.8-rc8, to reuse
serial_mxc with DTE and prepare for device tree migration of other
functions and imx53 devices.

The CX9020 differs from i.MX53 Quick Start Board by:
- use uart2 instead of uart1
- DVI-D connector instead of VGA
- no audio
- CCAT FPGA connected to emi
- enable rtc

Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
diff --git a/drivers/pinctrl/nxp/pinctrl-imx5.c b/drivers/pinctrl/nxp/pinctrl-imx5.c
new file mode 100644
index 0000000..6942f39
--- /dev/null
+++ b/drivers/pinctrl/nxp/pinctrl-imx5.c
@@ -0,0 +1,44 @@
+
+/*
+ * Copyright (C) 2016 Peng Fan <van.freenix@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <dm/device.h>
+#include <dm/pinctrl.h>
+
+#include "pinctrl-imx.h"
+
+static struct imx_pinctrl_soc_info imx5_pinctrl_soc_info;
+
+static int imx5_pinctrl_probe(struct udevice *dev)
+{
+	struct imx_pinctrl_soc_info *info =
+		(struct imx_pinctrl_soc_info *)dev_get_driver_data(dev);
+
+	return imx_pinctrl_probe(dev, info);
+}
+
+static const struct udevice_id imx5_pinctrl_match[] = {
+	{
+		.compatible = "fsl,imx53-iomuxc",
+		.data = (ulong)&imx5_pinctrl_soc_info
+	},
+	{
+		.compatible = "fsl,imx53-iomuxc-gpr",
+		.data = (ulong)&imx5_pinctrl_soc_info
+	},
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(imx5_pinctrl) = {
+	.name = "imx5-pinctrl",
+	.id = UCLASS_PINCTRL,
+	.of_match = of_match_ptr(imx5_pinctrl_match),
+	.probe = imx5_pinctrl_probe,
+	.remove = imx_pinctrl_remove,
+	.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
+	.ops = &imx_pinctrl_ops,
+	.flags = DM_FLAG_PRE_RELOC,
+};