spi: imx: Improve driver description

"SPI Controller driver" is a too generic description.

Make it i.MX specific instead.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20210316180922.239805-1-festevam@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-imx.c

@@ -1801,7 +1801,7 @@ static struct platform_driver spi_imx_driver = {
 };
 module_platform_driver(spi_imx_driver);
 
-MODULE_DESCRIPTION("SPI Controller driver");
+MODULE_DESCRIPTION("i.MX SPI Controller driver");
 MODULE_AUTHOR("Sascha Hauer, Pengutronix");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:" DRIVER_NAME);