drm/i915: Turn HAS_DDI() into a device_info flag

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 9ebe895..564d4c6 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -308,12 +308,14 @@
 static const struct intel_device_info intel_haswell_d_info = {
 	GEN7_FEATURES,
 	.is_haswell = 1,
+	.has_ddi = 1,
 };
 
 static const struct intel_device_info intel_haswell_m_info = {
 	GEN7_FEATURES,
 	.is_haswell = 1,
 	.is_mobile = 1,
+	.has_ddi = 1,
 };
 
 static const struct pci_device_id pciidlist[] = {		/* aka */