Add node to support the QUP5 SPI controller inside of IPQ6018.
Some routers use this bus to connect SPI TPM chips.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://lore.kernel.org/r/20231203154003.532765-1-amadeus@jmu.edu.cnSigned-off-by: Bjorn Andersson <andersson@kernel.org>