Add chv_crtc_clock_get() to read out the DPLL settings.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NImre Deak <imre.deak@intel.com>
[danvet: Fix compile due to bikeshedded headers in an earlier patch.]
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>