usaeg:
<exe> <-s|--spec> <|h264|h265|avs2|vp9|av1|jpeg|all> [-q]
-h|--help: help info
-s|--spec: spec, |h264|h265|avs2|vp9|av1|jpeg|all
-sv|--save: save test file
-l|--log: exec mpp demo with log
-d|--debug: dump debug info
Change-Id: I5c69570d0a2834c0114c75ed3f64c734e238d4b6
Signed-off-by: Hongjin Li <vic.hong@rock-chips.com>