debian/patches: move away from Qt to fix error-not-emited memory leak
I've done a port of the SocketReader code and related code to GLib APIs in repowerd. This commit brings that code from repowerd commit 32605e47efed ("Merge branch 'focal-proper-backlight-ctrl' into 'main'") waydroid-sensors.
This eliminates the need to link to Qt, integrates with the existing GLib-based EventLoop better, and avoid a memory "leak" from queued signal emission, as described in [1].