input: synaptics_dsx_2.6: not reinit when spontaneous reset is detected

There is no need to reinit device when spontaneous reset is detected,
touch will recover by itself.

CRs-Fixed: 1003951
Change-Id: Ifb5b134d0fbeb2f55f16af8806abb9c8e51c35e0
Signed-off-by: Xiaonian Wang <xiaonian@codeaurora.org>