libcamera: MediaEntity: expose the entity flags

The media entity flags can be useful for pipeline handlers to find the
default device in a media graph which is marked with the
MEDIA_ENT_FL_DEFAULT flag. This will be especially useful for the UVC
pipeline handler where the entity names differ per device.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/libcamera/include/media_object.h

@@ -85,6 +85,7 @@ class MediaEntity : public MediaObject
 public:
 	const std::string &name() const { return name_; }
 	unsigned int function() const { return function_; }
+	unsigned int flags() const { return flags_; }
 	const std::string &deviceNode() const { return deviceNode_; }
 	unsigned int deviceMajor() const { return major_; }
 	unsigned int deviceMinor() const { return minor_; }
@@ -106,6 +107,7 @@ private:
 
 	std::string name_;
 	unsigned int function_;
+	unsigned int flags_;
 	std::string deviceNode_;
 	unsigned int major_;
 	unsigned int minor_;