arm/dt: msm8610: Add the on-demand supplies for audio codec

There are several supplies needed for audio codec to function. But some
of the supplies can be disabled if not needed to reduce the system power
assumption. Add the on-demand supplies so the audio codec driver can
disable or enable these supplies.

Change-Id: I3d996533e5fd70995c8195567bfa5392548d8f27
CRs-Fixed: 480759
Signed-off-by: Kuirong Wang <kuirongw@codeaurora.org>