ASoC: msm: Implement soft volume control

Existing cvd volume and mute commands have been deprecated.
Replace the deprecated volume api with soft volume api. Update
volume and mute kcontrol to take ramp duration as a parameter.

Change-Id: I320686d4deb3758c40441fbc54e952d885b548ff
CRs-fixed: 460114
Signed-off-by: Pradnya Chaphekar <pradnyac@codeaurora.org>