audio: stb headphone volume issue. [2/2]

PD#SWPL-190858

Problem:
1.platform_server set cvbs unmute vol to 100.
2.audio hal set kctrl "DAC Digital Playback Volume"
error.

Solution:
1.change cvbs unmute vol to 255.
2.kctrl "DAC Digital Playback Volume" need two params.

Verify:
s7d

Change-Id: I82f84ed0304dea28b5790472081543c59684247f
Signed-off-by: dongyang.zhang <dongyang.zhang@amlogic.com>
1 file changed