ARM: dts: msm: include audio overlay dtsi for sdm855

Include sdm855-audio-overlay.dtsi file in all other sdm855 target
variants to update audio specific properties.

Change-Id: I1d1e5abf43bfecd77e9bd4cb5d25fe3736117936
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>