Give a subdirectory to all IPA modules to make the structure of the source tree more consistent. This will also simplify the implementation of IPA module selection at build time. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>