drm/i915/documentation: Add intel_uncore.c to drm.tmpl

Include intel_uncore.c in template for it to include d
documentation for intel_uncore_forcewake_get and *_put.

Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: NMika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Documentation/DocBook/drm.tmpl

@@ -3969,6 +3969,7 @@ int num_ioctls;</synopsis>
         <title>Runtime Power Management</title>
 !Pdrivers/gpu/drm/i915/intel_runtime_pm.c runtime pm
 !Idrivers/gpu/drm/i915/intel_runtime_pm.c
+!Idrivers/gpu/drm/i915/intel_uncore.c
       </sect2>
       <sect2>
         <title>Interrupt Handling</title>