arm64: dts: qcom: Add sound node for sc7180-trogdor-coachz

arm64: dts: qcom: Add sound node for sc7180-trogdor-coachz

This is a trgodor variant, required to have sound node variable
for coachz specific platform.

Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210314061054.19451-3-srivasam@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>