vepu58x roi cfg generation is depended on vepu54x roi cfg.
1. Use roi_enable to enable roi test.
2. Use roi_type to test different roi config mode.
Old region mode is set to legacy now for future roi cfg will be more and
more complicated.
Change-Id: Ib9e8976b732f05625e7589b64752d38fbd83584b
Signed-off-by: sayon.chen <sayon.chen@rock-chips.com>