input: synaptic_dsx: stay awake the device during firmware update

If touch controller goes into suspend while firmware upgrade is
happening, then the upgrade process will fail. Add support to keep
the touch controller awake during firmware upgrade. Also reduce
the excessive logs coming during firmware upgrade. Now logs are
printed per block only.

Change-Id: I7f20c87b21189b1731a7941c79ba3024c61bdfb9
Signed-off-by: Sarada Prasanna Garnayak <c_sgarna@codeaurora.org>