Move watermarks and helper functions (such as cxsr and fifo buffers) into
intel_pm module.
Signed-off-by: NEugeni Dodonov <eugeni.dodonov@intel.com>
Acked-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>