pinctrl: add i.MXRT driver

Add i.MXRT pinctrl driver.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
diff --git a/drivers/pinctrl/nxp/pinctrl-imxrt.c b/drivers/pinctrl/nxp/pinctrl-imxrt.c
new file mode 100644
index 0000000..4a93941
--- /dev/null
+++ b/drivers/pinctrl/nxp/pinctrl-imxrt.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019
+ * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/pinctrl.h>
+
+#include "pinctrl-imx.h"
+
+static struct imx_pinctrl_soc_info imxrt_pinctrl_soc_info = {
+	.flags = ZERO_OFFSET_VALID,
+};
+
+static int imxrt_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 imxrt_pinctrl_match[] = {
+	{ .compatible = "fsl,imxrt-iomuxc",
+	  .data = (ulong)&imxrt_pinctrl_soc_info },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(imxrt_pinctrl) = {
+	.name = "imxrt-pinctrl",
+	.id = UCLASS_PINCTRL,
+	.of_match = of_match_ptr(imxrt_pinctrl_match),
+	.probe = imxrt_pinctrl_probe,
+	.remove = imx_pinctrl_remove,
+	.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
+	.ops = &imx_pinctrl_ops,
+	.flags = DM_FLAG_PRE_RELOC,
+};