configs: Add control for va_dec mode for kona and lito

Controls for VA_DEC Modes are not added in mixer paths.
Add respective controls for headset path.

Change-Id: I85c476fe71dc4563072387c3f93f84b09633cac1
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
7 files changed