input: touchscreen: synaptics: fix deadlock

Fix potential deadlock issue when stability test.
And this patch is from vendor's new driver with tag "synaptics_tcm_v1_3".

Change-Id: Ie1d2054e91573cd82df897a34726119da0fc7fb0
Signed-off-by: Fei Mao <feim1@codeaurora.org>