mod_scmi_perf: Fix fast channels wrong response
Created by: Sevenarth
The SCMI module was wrongly responding with a SCMI_NOT_SUPPORTED error instead of a SCMI_NOT_FOUND, when an invalid message id was sent for the command: DESCRIBE_FASTCHANNELS. So, the modules were not conformant to the SCMI specs.
Change-Id: I34104224815ee74eb1303ef0793e5dff99bda14a Signed-off-by: Luca Vizzarro Luca.Vizzarro@arm.com