arm64: dts: qcom: sdm845-db845c: add generic sound compatible

Use generic sound card fallback compatible, because the device is
actually fully compatible with the generic one.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230123084300.22353-1-krzysztof.kozlowski@linaro.org