libcamera: framebuffer: Add FrameMetadata::Status::FrameStartup

Add a new status enum, FrameStartup, used to denote that even though
the frame has been successfully captured, the IQ parameters set by the
IPA will cause the frame to be unusable and applications are advised to
not consume this frame. An example of this would be on a cold-start of
the 3A algorithms, and there will be large oscillations to converge to
a stable state quickly.

Additional, update the definition of the FrameError state to cover the
usage when the sensor is known to produce a number of invalid/error
frames after stream-on.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

include/libcamera/framebuffer.h

@@ -26,6 +26,7 @@ struct FrameMetadata {
 		FrameSuccess,
 		FrameError,
 		FrameCancelled,
+		FrameStartup,
 	};
 
 	struct Plane {