FROMLIST: dt-bindings: sound: add devicetree document for rt5616

Add the description for rt5616 codec.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Bug: 25923642
Patchset: add the devicetree document for rt5616.

(am https://patchwork.kernel.org/patch/7901961/)
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Change-Id: I517fbc10c074d915776f48f1966929347e439333
1 file changed