input: touchscreen: synaptics_tcm: Update watchdog delay to 50s

Currently, syna_tcm_watchdog_work function executes every 5 seconds
and wakes up cpus in static display usecase. To avoid this, increase
the delay watchdog delay to 50s.

Change-Id: Iaaea5601ffaf452094fac446d5805453ef654f1e
Signed-off-by: Ritesh Kumar <riteshk@codeaurora.org>