spidev: Add Micron SPI NOR Authenta device compatible

Add compatible string for Micron SPI NOR Authenta device.
Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
Link: https://lore.kernel.org/r/20210419204015.1769-1-sshivamurthy@micron.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spidev.c

@@ -683,6 +683,7 @@ static const struct of_device_id spidev_dt_ids[] = {
 	{ .compatible = "dh,dhcom-board" },
 	{ .compatible = "menlo,m53cpld" },
 	{ .compatible = "cisco,spi-petra" },
+	{ .compatible = "micron,spi-authenta" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, spidev_dt_ids);