mt8195: eint: Enable and initialize eint
requested to merge mediatek/aiot/team-mtk-aiot-sw-ss2/trusted-firmware-a:ryan/eint_init into mtk-v2.6
EINT event mask register is used to mask EINT wakeup source. All EINT wakeup sources are masked by default. Since most MediaTek SoCs do not have this design, we can't modify the kernel eint upstream driver to solve the issue "Can't wakeup using power button or RTC'. So we add a driver in bootloader to unmask all EINT wakeup sources.
FIXED: AIOT-1114, AIOT-1139, AIOT-728
Signed-off-by: Ryan Cho ryan.cho@mediatek.com
Edited by Ryan Cho