drm/i915: s/pre_pll/pre/ on the lvds port enable function

i9xx doesn't use pre_enable at all, so we can fold this in now.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1a8a01b..0497841 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3214,12 +3214,9 @@
 
 	intel_update_watermarks(dev);
 
-	for_each_encoder_on_crtc(dev, crtc, encoder) {
-		if (encoder->pre_pll_enable)
-			encoder->pre_pll_enable(encoder);
+	for_each_encoder_on_crtc(dev, crtc, encoder)
 		if (encoder->pre_enable)
 			encoder->pre_enable(encoder);
-	}
 
 	if (intel_crtc->config.has_pch_encoder) {
 		/* Note: FDI PLL enabling _must_ be done before we enable the
@@ -3663,15 +3660,11 @@
 	intel_update_watermarks(dev);
 
 	for_each_encoder_on_crtc(dev, crtc, encoder)
-		if (encoder->pre_pll_enable)
-			encoder->pre_pll_enable(encoder);
-
-	i9xx_enable_pll(intel_crtc);
-
-	for_each_encoder_on_crtc(dev, crtc, encoder)
 		if (encoder->pre_enable)
 			encoder->pre_enable(encoder);
 
+	i9xx_enable_pll(intel_crtc);
+
 	i9xx_pfit_enable(intel_crtc);
 
 	intel_crtc_load_lut(crtc);