drm/i915: unify HDMI/DP hpd definitions

They're physically the same pins and also the same bits, duplicating
only confuses the reader. This also makes it a bit obvious that we
have quite some code duplication going on here. Squashing that is for
a larger rework in our hpd handling though.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 56e408b..7b8bfe8 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2302,13 +2302,13 @@
 
 	switch (intel_dig_port->port) {
 	case PORT_B:
-		bit = DPB_HOTPLUG_LIVE_STATUS;
+		bit = PORTB_HOTPLUG_LIVE_STATUS;
 		break;
 	case PORT_C:
-		bit = DPC_HOTPLUG_LIVE_STATUS;
+		bit = PORTC_HOTPLUG_LIVE_STATUS;
 		break;
 	case PORT_D:
-		bit = DPD_HOTPLUG_LIVE_STATUS;
+		bit = PORTD_HOTPLUG_LIVE_STATUS;
 		break;
 	default:
 		return connector_status_unknown;
@@ -2838,15 +2838,15 @@
 		name = "DPDDC-A";
 		break;
 	case PORT_B:
-		dev_priv->hotplug_supported_mask |= DPB_HOTPLUG_INT_STATUS;
+		dev_priv->hotplug_supported_mask |= PORTB_HOTPLUG_INT_STATUS;
 		name = "DPDDC-B";
 		break;
 	case PORT_C:
-		dev_priv->hotplug_supported_mask |= DPC_HOTPLUG_INT_STATUS;
+		dev_priv->hotplug_supported_mask |= PORTC_HOTPLUG_INT_STATUS;
 		name = "DPDDC-C";
 		break;
 	case PORT_D:
-		dev_priv->hotplug_supported_mask |= DPD_HOTPLUG_INT_STATUS;
+		dev_priv->hotplug_supported_mask |= PORTD_HOTPLUG_INT_STATUS;
 		name = "DPDDC-D";
 		break;
 	default: