drm/i915: Replace some open coded intel_crtc_has_dp_encoder()s

A bunch of places still look for DP encoders manually. Just call
intel_crtc_has_dp_encoder(). Note that many of these places don't
look for EDP or DP_MST, but it's still fine to replace them because
* for audio we don't enable audio on eDP anyway
* the code that lack DP MST check is only for plaforms that
  don't support MST anyway

v2: Rebase

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466621833-5054-8-git-send-email-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/intel_audio.c

@@ -262,7 +262,7 @@ static void hsw_audio_codec_disable(struct intel_encoder *encoder)
 	tmp |= AUD_CONFIG_N_PROG_ENABLE;
 	tmp &= ~AUD_CONFIG_UPPER_N_MASK;
 	tmp &= ~AUD_CONFIG_LOWER_N_MASK;
-	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DISPLAYPORT))
+	if (intel_crtc_has_dp_encoder(intel_crtc->config))
 		tmp |= AUD_CONFIG_N_VALUE_INDEX;
 	I915_WRITE(HSW_AUD_CFG(pipe), tmp);
 
@@ -328,7 +328,7 @@ static void hsw_audio_codec_enable(struct drm_connector *connector,
 	tmp = I915_READ(HSW_AUD_CFG(pipe));
 	tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
 	tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK;
-	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DISPLAYPORT))
+	if (intel_crtc_has_dp_encoder(intel_crtc->config))
 		tmp |= AUD_CONFIG_N_VALUE_INDEX;
 	else
 		tmp |= audio_config_hdmi_pixel_clock(adjusted_mode);
@@ -389,7 +389,7 @@ static void ilk_audio_codec_disable(struct intel_encoder *encoder)
 	tmp |= AUD_CONFIG_N_PROG_ENABLE;
 	tmp &= ~AUD_CONFIG_UPPER_N_MASK;
 	tmp &= ~AUD_CONFIG_LOWER_N_MASK;
-	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DISPLAYPORT))
+	if (intel_crtc_has_dp_encoder(intel_crtc->config))
 		tmp |= AUD_CONFIG_N_VALUE_INDEX;
 	I915_WRITE(aud_config, tmp);
 
@@ -475,7 +475,7 @@ static void ilk_audio_codec_enable(struct drm_connector *connector,
 	tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
 	tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
 	tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK;
-	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DISPLAYPORT))
+	if (intel_crtc_has_dp_encoder(intel_crtc->config))
 		tmp |= AUD_CONFIG_N_VALUE_INDEX;
 	else
 		tmp |= audio_config_hdmi_pixel_clock(adjusted_mode);
@@ -513,7 +513,7 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder)
 
 	/* ELD Conn_Type */
 	connector->eld[5] &= ~(3 << 2);
-	if (intel_crtc_has_type(crtc->config, INTEL_OUTPUT_DISPLAYPORT))
+	if (intel_crtc_has_dp_encoder(crtc->config))
 		connector->eld[5] |= (1 << 2);
 
 	connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;