arm64: dts: qcom: sa8775p: add missing spi nodes

Add the missing nodes of the SPI buses present on sa8775p platform.
Signed-off-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230526133122.16443-4-quic_shazhuss@quicinc.com