mtd: nand: mxs_nand: add device tree support for i.MX 6

Support i.MX 6 NAND GPMI driver data from device tree.
Signed-off-by: NStefan Agner <stefan.agner@toradex.com>

drivers/mtd/nand/mxs_nand_dt.c

@@ -21,11 +21,19 @@ struct mxs_nand_dt_data {
 	unsigned int max_ecc_strength_supported;
 };
 
+static const struct mxs_nand_dt_data mxs_nand_imx6q_data = {
+	.max_ecc_strength_supported = 40,
+};
+
 static const struct mxs_nand_dt_data mxs_nand_imx7d_data = {
 	.max_ecc_strength_supported = 62,
 };
 
 static const struct udevice_id mxs_nand_dt_ids[] = {
+	{
+		.compatible = "fsl,imx6q-gpmi-nand",
+		.data = (unsigned long)&mxs_nand_imx6q_data,
+	},
 	{
 		.compatible = "fsl,imx7d-gpmi-nand",
 		.data = (unsigned long)&mxs_nand_imx7d_data,