drm/i915: rename dev_priv info to __info to avoid usage

Encourage use of INTEL_INFO() to access dev_priv->info to not accumulate
more direct users of ->info, making further changes easier.

Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5f5d81880046331f77624d00278528abc1cf30c6.1546267488.git.jani.nikula@intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -1431,7 +1431,7 @@ struct drm_i915_private {
 	struct kmem_cache *dependencies;
 	struct kmem_cache *priorities;
 
-	const struct intel_device_info info;
+	const struct intel_device_info __info; /* Use INTEL_INFO() to access. */
 	struct intel_runtime_info __runtime; /* Use RUNTIME_INFO() to access. */
 	struct intel_driver_caps caps;
 
@@ -2192,13 +2192,7 @@ static inline unsigned int i915_sg_segment_size(void)
 	return size;
 }
 
-static inline const struct intel_device_info *
-intel_info(const struct drm_i915_private *dev_priv)
-{
-	return &dev_priv->info;
-}
-
-#define INTEL_INFO(dev_priv)	intel_info((dev_priv))
+#define INTEL_INFO(dev_priv)	(&(dev_priv)->__info)
 #define RUNTIME_INFO(dev_priv)	(&(dev_priv)->__runtime)
 #define DRIVER_CAPS(dev_priv)	(&(dev_priv)->caps)