arm64: dts: qcom: sdm845-db845c-navigation-mezzanine: Add navigation mezzanine dts

Move the dts data for the rb3 navigation mezzanine into its own dts file.

Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221117003232.589734-6-bryan.odonoghue@linaro.org