drm/radeon: Clean up code in radeon_pci_shutdown()

This fixes the formatting on one comment and consolidates the
pci_get_drvdata() into the radeon_suspend_kms().

Signed-off-by: Kyle Mahlkuch <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/radeon/radeon_drv.c

···
 static void
 radeon_pci_shutdown(struct pci_dev *pdev)
 {
-#ifdef CONFIG_PPC64
-	struct drm_device *ddev = pci_get_drvdata(pdev);
-#endif
-
 	/* if we are running in a VM, make sure the device
 	 * torn down properly on reboot/shutdown
 	 */
···
 		radeon_pci_remove(pdev);
 
 #ifdef CONFIG_PPC64
-	/* Some adapters need to be suspended before a
+	/*
+	 * Some adapters need to be suspended before a
 	 * shutdown occurs in order to prevent an error
 	 * during kexec.
 	 * Make this power specific becauase it breaks
 	 * some non-power boards.
 	 */
-	radeon_suspend_kms(ddev, true, true, false);
+	radeon_suspend_kms(pci_get_drvdata(pdev), true, true, false);
 #endif
 }