libcamera: global_configuration: Rename yamlConfiguration_

Once parsed, the global configuration isn't a YAML file anymore. Rename
the yamlConfiguration_ to configuration_.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Isaac Scott <isaac.scott@ideasonboard.com>

include/libcamera/internal/global_configuration.h

@@ -56,7 +56,7 @@ private:
 	void load();
 	bool loadFile(const std::filesystem::path &fileName);
 
-	std::unique_ptr<ValueNode> yamlConfiguration_ =
+	std::unique_ptr<ValueNode> configuration_ =
 		std::make_unique<ValueNode>();
 };