regulator: qpnp-amoled: add support to disable pulse skipping

On some customer display panels, touch ghosting can happen due to
a voltage ripple from amoled. Add support to fix this issue, following
HW recommendation, by disabling smart pulse skipping in module
probe and disabling forced PSM when AMOLED is enabled.

Change-Id: Id5886d4cdaf2aa58bc53a874041bfae90374fafb
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>