drm/i915/bxt: Pass drm_i915_private to DDI PHY, CDCLK helpers

For internal APIs passing dev_priv is preferred to reduce indirections,
so convert over a few DDI PHY, CDCLK helpers.

No functional change.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: David Weinehall <david.weinehall@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459515767-29228-10-git-send-email-imre.deak@intel.com
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 2b9e79d..d50d2a3 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1834,11 +1834,11 @@
 	I915_WRITE(BXT_PHY_CTL_FAMILY(phy), val);
 }
 
-void broxton_ddi_phy_init(struct drm_device *dev)
+void broxton_ddi_phy_init(struct drm_i915_private *dev_priv)
 {
 	/* Enable PHY1 first since it provides Rcomp for PHY0 */
-	broxton_phy_init(dev->dev_private, DPIO_PHY1);
-	broxton_phy_init(dev->dev_private, DPIO_PHY0);
+	broxton_phy_init(dev_priv, DPIO_PHY1);
+	broxton_phy_init(dev_priv, DPIO_PHY0);
 }
 
 static void broxton_phy_uninit(struct drm_i915_private *dev_priv,
@@ -1851,10 +1851,8 @@
 	I915_WRITE(BXT_PHY_CTL_FAMILY(phy), val);
 }
 
-void broxton_ddi_phy_uninit(struct drm_device *dev)
+void broxton_ddi_phy_uninit(struct drm_i915_private *dev_priv)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
 	broxton_phy_uninit(dev_priv, DPIO_PHY1);
 	broxton_phy_uninit(dev_priv, DPIO_PHY0);