drm/i915: Make IS_KABYLAKE only take dev_priv

Saves 1320 bytes of .rodata strings.

v2: Add parantheses around dev_priv. (Ville Syrjala)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e057b54..1a2b3be 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5828,7 +5828,7 @@
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
-	if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
+	if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
 		u32 limit = I915_READ(SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK;
 		int max_cdclk, vco;
 
@@ -10646,7 +10646,7 @@
 
 	port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
 
-	if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
+	if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
 		skylake_get_ddi_pll(dev_priv, port, pipe_config);
 	else if (IS_BROXTON(dev))
 		bxt_get_ddi_pll(dev_priv, port, pipe_config);
@@ -12821,7 +12821,7 @@
 			      pipe_config->dpll_hw_state.pll9,
 			      pipe_config->dpll_hw_state.pll10,
 			      pipe_config->dpll_hw_state.pcsdw12);
-	} else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
+	} else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
 		DRM_DEBUG_KMS("dpll_hw_state: "
 			      "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
 			      pipe_config->dpll_hw_state.ctrl1,
@@ -15420,7 +15420,7 @@
 		 */
 		found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
 		/* WaIgnoreDDIAStrap: skl */
-		if (found || IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
+		if (found || IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
 			intel_ddi_init(dev, PORT_A);
 
 		/* DDI B, C and D detection is indicated by the SFUSE_STRAP
@@ -15436,7 +15436,7 @@
 		/*
 		 * On SKL we don't have a way to detect DDI-E so we rely on VBT.
 		 */
-		if ((IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) &&
+		if ((IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) &&
 		    (dev_priv->vbt.ddi_port_info[PORT_E].supports_dp ||
 		     dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi ||
 		     dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi))