Tablet2: tc358765: Resetting tc358765 on power off.

Due to hardware bug backlight is not disabled by PWM. Gpio 102
is shared between resetting tc358765 and backlight enabling.
For the case when we put a tablet into suspend we can reset
tc358765 on it's power off and disable backlight. Backlight
will be enabled on tc358765 power on.

Change-Id: I092be7eedfcc6ca077472aa7c9350c1527017aff
Signed-off-by: Andrii Anisov <andrii.anisov@ti.com>