... and move patch to Generic-x11
This reverts commit 40661a4054.
The patch is required to start X11 applications like 'chrome' or 'st' on top of kodi.
- changed x11 to wl as suitable displayserver option for ARM based projects
- changed the WINDOWMANAGER var from "none" to "no" if it's not in use to us the same naming scheme as for all other vars
- set the WINDOWMANAGER for generic/wayland to weston