drm/i915: rename GMBUS_PORT_* macros as GMBUS_PIN_*

The specs refer to pin pairs. Start moving towards using pin rather than
port all around to avoid confusion. No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 6095a99..fa5699c 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -747,7 +747,7 @@
 		goto out;
 
 	/* Try to probe digital port for output in DVI-I -> VGA mode. */
-	i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PORT_DPB);
+	i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPB);
 	ret = intel_crt_ddc_get_modes(connector, i2c);
 
 out: