drm/i915: Assorted dev_priv cleanups

A small selection of macros which can only accept dev_priv from
now on and a resulting trickle of fixups.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index fb5b443..807c743 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -287,7 +287,7 @@ static inline int use_cpu_reloc(struct drm_i915_gem_object *obj)
 	if (DBG_USE_CPU_RELOC)
 		return DBG_USE_CPU_RELOC > 0;
 
-	return (HAS_LLC(obj->base.dev) ||
+	return (HAS_LLC(to_i915(obj->base.dev)) ||
 		obj->base.write_domain == I915_GEM_DOMAIN_CPU ||
 		obj->cache_level != I915_CACHE_NONE);
 }
@@ -833,7 +833,7 @@ need_reloc_mappable(struct i915_vma *vma)
 		return false;
 
 	/* See also use_cpu_reloc() */
-	if (HAS_LLC(vma->obj->base.dev))
+	if (HAS_LLC(to_i915(vma->obj->base.dev)))
 		return false;
 
 	if (vma->obj->base.write_domain == I915_GEM_DOMAIN_CPU)