ARM: dts: qcom: samsung-matisse-common: Add UART

This was not enabled in the matisse-wifi tree. Without this, it is not
possible to use the USB port for serial debugging via a "Carkit debug
cable".

Signed-off-by: Stefan Hansson <newbyte@postmarketos.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240215180322.99089-5-newbyte@postmarketos.org


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