Since the introduction of the new OMAP DSS DVI connector driver in
commit 348077b154357eec595068a3336ef6beb870e6f3 ("OMAPDSS: Add new DVI
Connector driver"), DVI outputs report a new display type of
OMAP_DISPLAY_TYPE_DVI instead of OMAP_DISPLAY_TYPE_DPI. Handle the new
type in the IRQ handler.