ASoC: wcd934x: Add missing INT0 interpolator path

Add missing path for codec interpolator 0 (INT0)
in wcd934x audio routing. This will cause playback
mute through INT0 mixing path. Change info logs to
dbg at instances of default value assignment.

CRs-fixed: 1099759
Change-Id: I3332d7e3bd0b310b486d273b7f9884410509ce25
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>