media: mgb4: Follow renaming of SPI "master" to "controller"

In commit 8caab75f ("spi: Generalize SPI "master" to "controller"")
some functions and struct members were renamed. To not break all drivers
compatibility macros were provided.

To be able to remove these compatibility macros push the renaming into
this driver.
Reviewed-by: Martin Tůma <martin.tuma@digiteqautomotive.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/ccad7ad4176265bf90af92add18a0242652f5a84.1707324794.git.u.kleine-koenig@pengutronix.deSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/media/pci/mgb4/mgb4_core.c

@@ -144,7 +144,7 @@ static int match_spi_adap(struct device *dev, void *data)
 	return to_spi_device(dev) ? 1 : 0;
 }
 
-static struct spi_master *get_spi_adap(struct platform_device *pdev)
+static struct spi_controller *get_spi_adap(struct platform_device *pdev)
 {
 	struct device *dev;
 
@@ -152,7 +152,7 @@ static struct spi_master *get_spi_adap(struct platform_device *pdev)
 	dev = device_find_child(&pdev->dev, NULL, match_spi_adap);
 	mutex_unlock(&pdev->dev.mutex);
 
-	return dev ? container_of(dev, struct spi_master, dev) : NULL;
+	return dev ? container_of(dev, struct spi_controller, dev) : NULL;
 }
 
 static int init_spi(struct mgb4_dev *mgbdev, u32 devid)
@@ -179,7 +179,7 @@ static int init_spi(struct mgb4_dev *mgbdev, u32 devid)
 	};
 	struct pci_dev *pdev = mgbdev->pdev;
 	struct device *dev = &pdev->dev;
-	struct spi_master *master;
+	struct spi_controller *ctlr;
 	struct spi_device *spi_dev;
 	u32 irq;
 	int rv, id;
@@ -207,8 +207,8 @@ static int init_spi(struct mgb4_dev *mgbdev, u32 devid)
 		return PTR_ERR(mgbdev->spi_pdev);
 	}
 
-	master = get_spi_adap(mgbdev->spi_pdev);
-	if (!master) {
+	ctlr = get_spi_adap(mgbdev->spi_pdev);
+	if (!ctlr) {
 		dev_err(dev, "failed to get SPI adapter\n");
 		rv = -EINVAL;
 		goto err_pdev;
@@ -242,8 +242,8 @@ static int init_spi(struct mgb4_dev *mgbdev, u32 devid)
 
 	spi_info.platform_data = &mgbdev->flash_data;
 
-	spi_dev = spi_new_device(master, &spi_info);
-	put_device(&master->dev);
+	spi_dev = spi_new_device(ctlr, &spi_info);
+	put_device(&ctlr->dev);
 	if (!spi_dev) {
 		dev_err(dev, "failed to create MTD device\n");
 		rv = -EINVAL;