greybus: raw: use hexadecimal notation for request types

Use hexadecimal notation for request types in log messages.

Signed-off-by: Johan Hovold <[e-mail]>
Reviewed-by: Viresh Kumar <[e-mail]>
Reviewed-by: Alex Elder <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/greybus/raw.c

···
 	u32 len;
 
 	if (op->type != GB_RAW_TYPE_SEND) {
-		dev_err(dev, "unknown request type %d\n", op->type);
+		dev_err(dev, "unknown request type 0x%02x\n", op->type);
 		return -EINVAL;
 	}