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: Stefan Agner <stefan.agner@toradex.com>
diff --git a/drivers/mtd/nand/mxs_nand_dt.c b/drivers/mtd/nand/mxs_nand_dt.c
index f89eb09..44dec5d 100644
--- a/drivers/mtd/nand/mxs_nand_dt.c
+++ b/drivers/mtd/nand/mxs_nand_dt.c
@@ -21,12 +21,20 @@
 	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,
 	},