The roi structure on vepu580 is too complex.
So we provide provide a buffer tunnel for externl user to config encoder
hardware directly.
External user should generate roi data structure according to datasheet.
Then config the base_addr, qp_addr, amv_addr, pmv_addr by metadata.
Change-Id: Iae50bf3ca36c1ff789140055d4d36a79afeb2e58
Signed-off-by: sayon.chen <sayon.chen@rock-chips.com>