feat(mt8196): add Mediatek MMinfra stub implementation

Implement stub functions for the MMinfra (Multimedia Infrastructure)
driver to ensure that the build can pass when a prebuilt library is
not available.

Change-Id: Iadac654950c868d3743b13a1d6f7ab5d1015fb86
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
4 files changed