drm/omap: Cast pointer to integer without generating warning

On 64-bit platforms, the compiler complains that casting a void pointer
to an unsigned int loses data. Cast the pointer to a uintptr_t to fix
this.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

drivers/gpu/drm/omapdrm/omap_drv.c

@@ -572,7 +572,7 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev)
 	priv->dss->mgr_ops_priv = priv;
 
 	soc = soc_device_match(omapdrm_soc_devices);
-	priv->omaprev = soc ? (unsigned int)soc->data : 0;
+	priv->omaprev = soc ? (uintptr_t)soc->data : 0;
 	priv->wq = alloc_ordered_workqueue("omapdrm", 0);
 
 	mutex_init(&priv->list_lock);