input: touchscreen: synaptics_dsx_2.6: reset device when resume

For SDW2500 device, don't need to reset device when resume. But
for other projects which use same touch IC, we must reset device;
otherwise the touch IC will not work well.

Change-Id: Ie367bf95366cd8c9f8b63dc013a751a1d5073077
Signed-off-by: Fei Mao <feim1@codeaurora.org>