arm64: dts: broadcom: bcmbca: Add spi controller node

Add support for HSSPI controller in ARMv8 chip dts files.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Link: https://lore.kernel.org/r/20230207065826.285013-5-william.zhang@broadcom.com


Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>