leds: qpnp-vibrator-ldo: disable vibrator in suspend path

Disable vibrator in suspend path as the stop timer is already
getting canceled and the vibrator may stay enabled.

Change-Id: Ib9bb692e974c59cb2c89c85690caee5bfaf7b4e4
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>