drm: Remove pdev field from struct drm_device

The field pdev in struct drm_device is unused. Remove it. The
value can be obtained by upcasting from the structure's dev field.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210502104953.21768-8-tzimmermann@suse.de

drivers/gpu/drm/drm_pci.c

@@ -162,7 +162,6 @@ static int drm_get_pci_dev(struct pci_dev *pdev,
 	if (ret)
 		goto err_free;
 
-	dev->pdev = pdev;
 #ifdef __alpha__
 	dev->hose = pdev->sysdata;
 #endif

include/drm/drm_device.h

@@ -321,9 +321,6 @@ struct drm_device {
 	/* List of devices per driver for stealth attach cleanup */
 	struct list_head legacy_dev_list;
 
-	/* PCI device structure */
-	struct pci_dev *pdev;
-
 #ifdef __alpha__
 	/** @hose: PCI hose, only used on ALPHA platforms. */
 	struct pci_controller *hose;