arm64: dts: qcom: sc8280xp: add missing spi nodes

Add the missing nodes for the spi buses that's present on this SoC.

This work was derived from various patches that Qualcomm delivered
to Red Hat in a downstream kernel.
Signed-off-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230103182229.37169-8-bmasney@redhat.com