firmware: scmi: Add error code IN_USE

In SCMI spec 3.2, there is an update:
Add IN_USE error code for usage with Pin control protocol

So add the error decoding for IN_USE.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

drivers/firmware/scmi/scmi_agent-uclass.c

@@ -35,6 +35,7 @@ static const struct error_code scmi_linux_errmap[] = {
 	{ .scmi = SCMI_GENERIC_ERROR, .errno = -EIO, },
 	{ .scmi = SCMI_HARDWARE_ERROR, .errno = -EREMOTEIO, },
 	{ .scmi = SCMI_PROTOCOL_ERROR, .errno = -EPROTO, },
+	{ .scmi = SCMI_IN_USE, .errno = -EADDRINUSE, },
 };
 
 /**

include/scmi_protocols.h

@@ -40,6 +40,7 @@ enum scmi_status_code {
 	SCMI_GENERIC_ERROR = -8,
 	SCMI_HARDWARE_ERROR = -9,
 	SCMI_PROTOCOL_ERROR = -10,
+	SCMI_IN_USE = -11,
 };
 
 /*