ARM: dts: msm: add audio setting for SDM855 RUMI device

qcom,audio-routing and msm-pcm-routing are missed for SDM855
RUMI device which causes sound card registration failure.
Add qcom,audio-routing and msm-pcm-routing to fix it.

Change-Id: Ida19fffe09bb5b49d250751ef9fe5ddcb29d2591
Signed-off-by: Meng Wang <mwang@codeaurora.org>