drm: Store vendor IDs directly in the EDID quirk structure

EDID vendor IDs are always 3 characters long (4 with the terminating
0).  It doesn't make any sense to have a (possibly 8-byte) pointer
to the ID string in the quirk structure.

Signed-off-by: Ian Pilcher <arequipeno@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_edid.c

@@ -81,7 +81,7 @@ struct detailed_mode_closure {
 #define LEVEL_CVT	3
 
 static struct edid_quirk {
-	char *vendor;
+	char vendor[4];
 	int product_id;
 	u32 quirks;
 } edid_quirk_list[] = {