regulator: qpnp-amoled: Add support to configure AB/IBB PD control in AOD

As per the hardware recommendation, add support to configure
AB/IBB PD control dynamically during AOD entry/exit.

Change-Id: Ib8f3ef4222dd06f41c0609391717e66e30bc6d5b
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>