arm64: dts: qcom: sdm845: Enable debug UART and I2C10 on sdm845-mtp

The debug UART is very useful to have.  I2C10 is enabled as an example
of a I2C port we can talk on for now.  Eventually we'll want to put
peripherals under it.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>