ASoC: dt-bindings: Mark old binding qcom,cpu-lpass-apq8016 as deprecated

We've had some discongruity in the compatible string of the lpass for 8916
for a while.

Mark the old compat as deprecated. New SoC additions such as msm8936 and
msm8939 should use the compat string "qcom,apq8016-lpass-cpu".

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>