libcamera: yaml_parser: Report filename on failures

It can be helpful to know 'which' file failed to parse if there is a
failure.

Report it to the user in the error message.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>

src/libcamera/yaml_parser.cpp

@@ -841,7 +841,9 @@ std::unique_ptr<YamlObject> YamlParser::parse(File &file)
 	std::unique_ptr<YamlObject> root(new YamlObject());
 
 	if (context.parseContent(*root)) {
-		LOG(YamlParser, Error) << "Failed to parse YAML content";
+		LOG(YamlParser, Error)
+			<< "Failed to parse YAML content from "
+			<< file.fileName();
 		return nullptr;
 	}