msm: bam_dmux: migrate to new clock voting api

Upstream has changed the clock voting api from a single api that must
be atmoic context compatable, to a split api with atomic and non-atomic
components.  Migrate to the new api as the old one is deprecated and
will be removed soon.

Change-Id: I3c78db67f280873ff1911381e8ff44ebc564b3d2
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>