arm64: dts: qcom: sm4450-qrd: add QRD4450 uart support

Add uart support for QRD4450 for enable uart console.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com>
Link: https://lore.kernel.org/r/20231129103325.24854-5-quic_tengfan@quicinc.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>