arm64: dts: qcom: x1e78100-t14s: Add audio playback over DisplayPort

arm64: dts: qcom: x1e78100-t14s: Add audio playback over DisplayPort

Add necessary DAI links and DAI name prefixes to enable audio playback
over USB/DisplayPort and HDMI.  The HDMI port is not yet enabled, but it
should carry respective DAI name prefix regardless.

Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251217120051.98198-4-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>