Fix missing dependency to xorg-evdev
The header of evdev is included by kcms/mouse/backends/x11/x11_evdev_backend.cpp.
So it should be listed in dependencies. Or it will fail to compile when evdev is not installed in the same place as X11.
The header of evdev is included by kcms/mouse/backends/x11/x11_evdev_backend.cpp.
So it should be listed in dependencies. Or it will fail to compile when evdev is not installed in the same place as X11.