This is auto-detected with the default SuSE kernel.
When I built a new kernel (188.8.131.52) or used the Alphagate 2.6.17 kernel, X refused to start with errors like...
Mouse no synaptics event device found (checked 11 nodes)
Mouse The /dev/input/event* device nodes seem to be missing
(***) Option ``Device'' ``/dev/input/mice''
(***) Option ``SHMConfig'' ``on''
Query no Synaptics: 6003C8
(EE) Mouse no synpaptics touchpad detected and no repeater device
(II) UnloadModule: ``synaptics''
(WW) No core pointer registered
No core pointer
Fatal server error:
failed to initialize core devices