When the native pixel formats supported by QT were introduced, the
RGB/BGR formats were inverted.
Swap the BGR888 and RGB888 mappings accordingly.
Fixes: f890a57b7a ("qcam: viewfinder: Add support for more native formats")
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>