drm/i915: prefer 3-letter acronym for ironlake

We are currently using a mix of platform name and acronym to name the
functions. Let's prefer the acronym as it should be clear what platform
it's about and it's shorter, so it doesn't go over 80 columns in a few
cases. This converts ironlake to ilk where appropriate.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224084012.24241-7-lucas.demarchi@intel.com

drivers/gpu/drm/i915/display/intel_crt.c

@@ -247,7 +247,7 @@ static void hsw_post_disable_crt(struct intel_encoder *encoder,
 
 	intel_ddi_disable_transcoder_func(old_crtc_state);
 
-	ironlake_pfit_disable(old_crtc_state);
+	ilk_pfit_disable(old_crtc_state);
 
 	intel_ddi_disable_pipe_clock(old_crtc_state);
 
@@ -351,7 +351,7 @@ intel_crt_mode_valid(struct drm_connector *connector,
 
 	/* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
 	if (HAS_PCH_LPT(dev_priv) &&
-	    (ironlake_get_lanes_required(mode->clock, 270000, 24) > 2))
+	    ilk_get_lanes_required(mode->clock, 270000, 24) > 2)
 		return MODE_CLOCK_HIGH;
 
 	/* HSW/BDW FDI limited to 4k */
@@ -427,7 +427,7 @@ static int hsw_crt_compute_config(struct intel_encoder *encoder,
 	return 0;
 }
 
-static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
+static bool ilk_crt_detect_hotplug(struct drm_connector *connector)
 {
 	struct drm_device *dev = connector->dev;
 	struct intel_crt *crt = intel_attached_crt(connector);
@@ -535,7 +535,7 @@ static bool intel_crt_detect_hotplug(struct drm_connector *connector)
 	int i, tries = 0;
 
 	if (HAS_PCH_SPLIT(dev_priv))
-		return intel_ironlake_crt_detect_hotplug(connector);
+		return ilk_crt_detect_hotplug(connector);
 
 	if (IS_VALLEYVIEW(dev_priv))
 		return valleyview_crt_detect_hotplug(connector);

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -3916,7 +3916,7 @@ static void intel_ddi_post_disable(struct intel_encoder *encoder,
 	if (INTEL_GEN(dev_priv) >= 9)
 		skl_scaler_disable(old_crtc_state);
 	else
-		ironlake_pfit_disable(old_crtc_state);
+		ilk_pfit_disable(old_crtc_state);
 
 	/*
 	 * When called from DP MST code: