Extend this to SKL and BXT as it's needed for these platforms as well.

v2: Change if condition to HAS_DDI() instead of listing each platform
Signed-off-by: NBob Paauwe <bob.j.paauwe@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>