drm/i915: s/INTEL_OUTPUT_DISPLAYPORT/INTEL_OUTPUT_DP/

INTEL_OUTPUT_DISPLAYPORT hsa been bugging me for a long time. It always
looks out of place besides INTEL_OUTPUT_EDP and INTEL_OUTPUT_DP_MST.
Let's just rename it to INTEL_OUTPUT_DP.

v2: Rebase

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466621833-5054-9-git-send-email-ville.syrjala@linux.intel.com
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index 9098169..5c1f2d2 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -713,7 +713,7 @@
 		pll = intel_find_shared_dpll(crtc, crtc_state,
 					     DPLL_ID_WRPLL1, DPLL_ID_WRPLL2);
 
-	} else if (encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
+	} else if (encoder->type == INTEL_OUTPUT_DP ||
 		   encoder->type == INTEL_OUTPUT_DP_MST ||
 		   encoder->type == INTEL_OUTPUT_EDP) {
 		enum intel_dpll_id pll_id;
@@ -1226,7 +1226,7 @@
 			 DPLL_CFGCR2_KDIV(wrpll_params.kdiv) |
 			 DPLL_CFGCR2_PDIV(wrpll_params.pdiv) |
 			 wrpll_params.central_freq;
-	} else if (encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
+	} else if (encoder->type == INTEL_OUTPUT_DP ||
 		   encoder->type == INTEL_OUTPUT_DP_MST ||
 		   encoder->type == INTEL_OUTPUT_EDP) {
 		switch (crtc_state->port_clock / 2) {
@@ -1534,7 +1534,7 @@
 		clk_div.m2_frac_en = clk_div.m2_frac != 0;
 
 		vco = best_clock.vco;
-	} else if (encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
+	} else if (encoder->type == INTEL_OUTPUT_DP ||
 		   encoder->type == INTEL_OUTPUT_EDP) {
 		int i;