feat(mt8196): add APU power on/off functions

1. Add APU power on/off functions
2. Refine the APU power on/off interface for mt8188
3. Add dcm setup function to support mt8196

Change-Id: Ie1caca40f89de71caac037fabe7e7455ff2a1872
Signed-off-by: Karl Li <karl.li@mediatek.com>
9 files changed