drm/i915: Use drm_i915_private as the native pointer for intel_uncore.c

Pass drm_i915_private to the uncore init/fini routines and their
subservients as it is their native type.

   text    data     bss     dec     hex filename
6309978 3578778  696320 10585076         a183f4 vmlinux
6309530 3578778  696320 10584628         a18234 vmlinux

a modest 400 bytes of saving, but 60 lines of code deleted!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1462885804-26750-1-git-send-email-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d3f6e58..7215dad 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15283,7 +15283,7 @@
 	dev_priv->atomic_cdclk_freq = dev_priv->cdclk_freq;
 
 	intel_init_clock_gating(dev);
-	intel_enable_gt_powersave(dev);
+	intel_enable_gt_powersave(dev_priv);
 }
 
 /*
@@ -16011,11 +16011,12 @@
 
 void intel_modeset_gem_init(struct drm_device *dev)
 {
+	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_crtc *c;
 	struct drm_i915_gem_object *obj;
 	int ret;
 
-	intel_init_gt_powersave(dev);
+	intel_init_gt_powersave(dev_priv);
 
 	intel_modeset_init_hw(dev);
 
@@ -16062,7 +16063,7 @@
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_connector *connector;
 
-	intel_disable_gt_powersave(dev);
+	intel_disable_gt_powersave(dev_priv);
 
 	intel_backlight_unregister(dev);
 
@@ -16094,7 +16095,7 @@
 
 	intel_cleanup_overlay(dev);
 
-	intel_cleanup_gt_powersave(dev);
+	intel_cleanup_gt_powersave(dev_priv);
 
 	intel_teardown_gmbus(dev);
 }