arm64: dts: qcom: sa8775p: add uart5 and uart9 nodes

Add remaining uart5 and uart9 nodes for UART bus present on sa8775p
SoC.

Signed-off-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230526133122.16443-5-quic_shazhuss@quicinc.com