Instead of writing to the DSP_ADDR ourselves. This will do the right
thing on gen >= 4 as well.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>