spi: kirkwood: add orion-spi compatible string

This matches the compatible string used by the Linux kernel. This will
allow u-boot to use the same device tree files.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
[jagan: use armada instead of orion on .data]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

drivers/spi/kirkwood_spi.c

@@ -386,6 +386,10 @@ static const struct dm_spi_ops mvebu_spi_ops = {
 	 */
 };
 
+static const struct mvebu_spi_dev armada_spi_dev_data = {
+	.is_errata_50mhz_ac = false,
+};
+
 static const struct mvebu_spi_dev armada_xp_spi_dev_data = {
 	.is_errata_50mhz_ac = false,
 };
@@ -399,6 +403,10 @@ static const struct mvebu_spi_dev armada_380_spi_dev_data = {
 };
 
 static const struct udevice_id mvebu_spi_ids[] = {
+	{
+		.compatible = "marvell,orion-spi",
+		.data = (ulong)&armada_spi_dev_data,
+	},
 	{
 		.compatible = "marvell,armada-375-spi",
 		.data = (ulong)&armada_375_spi_dev_data