pipeline: raspberrypi: Demote the category of a logging message

Switch the "no buffers available" log message from Info to Debug so that it does
not get output by default.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
diff --git a/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp b/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp
index bab80d2..a4159e2 100644
--- a/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp
+++ b/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp
@@ -130,8 +130,8 @@
 	 */
 	if (!buffer) {
 		if (availableBuffers_.empty()) {
-			LOG(RPISTREAM, Info) << "No buffers available for "
-						<< name_;
+			LOG(RPISTREAM, Debug) << "No buffers available for "
+					      << name_;
 			/*
 			 * Note that we need to queue an internal buffer as soon
 			 * as one becomes available.