arm64: dts: qcom: msm8996: align dai node names with dtschema

DT schema expects DAI node names to be "dai":

  qcom/msm8996-mtp.dtb: dais: 'hdmi@1' does not match any of the regexes: '^dai@[0-9]+$', 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-7-krzysztof.kozlowski@linaro.org