arm/dt: msm8226: Add pm8226 vibrator to device tree

Add support for qpnp vibrator by passing data through
QRD device tree.  Also add the device to PMIC8226 device
tree to be enabled as necessary for other devices.

Change-Id: I07faa2194ffd40d41ea0794dee01dd710edccf53
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>