Move FIFO and write size to CaptureConfig structure.

Now configured from baseband, where write size and appropriate FIFO size is known.

firmware/baseband/proc_capture.cpp

@@ -85,7 +85,7 @@ void CaptureProcessor::on_message(const Message* const message) {
 
 void CaptureProcessor::capture_config(const CaptureConfigMessage& message) {
 	if( message.config ) {
-		stream = std::make_unique<StreamInput>(15, *message.config);
+		stream = std::make_unique<StreamInput>(*message.config);
 	} else {
 		stream.reset();
 	}