feat(plat/mediatek/apu): add mt8192 APU SiP call support

Add APU SiP call support for start/stop mcu.

Signed-off-by: Flora Fu <flora.fu@mediatek.com>
Change-Id: Ibf93d8ccf22c414de3093cee9e13f7668588f69e
Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@mediatek.com>
5 files changed