Preparing to add the AMD/Xilinx SCMI vendor protocol driver, support probe
of SCMI vendor ID 0x81. Add the protocol ID, the per-agent protocol device
slot, the probe/lookup switch cases and the scmi command name, gated by a
Kconfig option for conditional compilation.
The same wiring has been done by commit 7830ccc77a ("firmware: scmi:
Support probe vendor ID 0x80 and 0x82").
Signed-off-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>