ARM: dts: msm: add dedicated sound card name for SDM845 QRD

SDM845 QRD has different speaker setup than other platforms.
Add dedicated sound card name for it.

Change-Id: I2f432d7be5f62c62b9713c4bc0d1ac7bb34b32fb
Signed-off-by: Xiaoyu Ye <benyxy@codeaurora.org>