drm/i915: Fix kerneldoc for intel_guc_fini

Recent refactoring forgot to update this one.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: bf9e8429ab97 ("drm/i915: Make various init functions take dev_priv")
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1480668233-25372-1-git-send-email-tvrtko.ursulin@linux.intel.com

drivers/gpu/drm/i915/intel_guc_loader.c

@@ -773,7 +773,7 @@ void intel_guc_init(struct drm_i915_private *dev_priv)
 
 /**
  * intel_guc_fini() - clean up all allocated resources
- * @dev:	drm device
+ * @dev_priv:	i915 device private
  */
 void intel_guc_fini(struct drm_i915_private *dev_priv)
 {