drm-hwc integrates rdp server
Add rdp support based on xrdp commit '4ea93beebb15c225adbec7c12f1f2cd4f1d9ea67'. Support virtual display and multi-display, each display can show different contents. Transmits resource id instead of frame buffer between rdp server and client. Get the resource id of frame buffer then send it to rdp client while PresentDisplay.
Signed-off-by: Li, HaihongX haihongx.li@intel.com