drm/cirrus: Remove references to struct drm_device.pdev

Using struct drm_device.pdev is deprecated. Convert cirrus to struct
drm_device.dev. No functional changes.

Signed-off-by: Thomas Zimmermann <[e-mail]>
Acked-by: Gerd Hoffmann <[e-mail]>
Acked-by: Sam Ravnborg <[e-mail]>
Cc: Gerd Hoffmann <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/tiny/cirrus.c

···
 
 	drm_mode_config_reset(dev);
 
-	dev->pdev = pdev;
 	pci_set_drvdata(pdev, dev);
 	ret = drm_dev_register(dev, 0);
 	if (ret)