media: staging/intel-ipu3: Use dev_get_drvdata where possible

Instead of using to_pci_dev + pci_get_drvdata,
use dev_get_drvdata to make code simpler.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/staging/media/ipu3/ipu3.c

@@ -778,8 +778,7 @@ static int __maybe_unused imgu_suspend(struct device *dev)
 
 static int __maybe_unused imgu_resume(struct device *dev)
 {
-	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct imgu_device *imgu = pci_get_drvdata(pci_dev);
+	struct imgu_device *imgu = dev_get_drvdata(dev);
 	int r = 0;
 	unsigned int pipe;