drm/i915/bios: rename intel_aux_ch() to intel_bios_port_aux_ch()

Conform to function naming in intel_bios.c.

Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181115105237.1237-1-jani.nikula@intel.com

drivers/gpu/drm/i915/intel_dp.c

@@ -6745,7 +6745,7 @@ bool intel_dp_init(struct drm_i915_private *dev_priv,
 	if (port != PORT_A)
 		intel_infoframe_init(intel_dig_port);
 
-	intel_dig_port->aux_ch = intel_aux_ch(dev_priv, port);
+	intel_dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
 	if (!intel_dp_init_connector(intel_dig_port, intel_connector))
 		goto err_init_connector;