Merge changes from topic "mt8188" into integration
* changes:
feat(mt8188): add pinctrl support
feat(mt8188): add RTC support
feat(mt8188): add pmic and pwrap support
refator(mediatek): move pmic.[c|h] to common folder
refator(mediatek): move common definitions of pmic wrap to common folder
feat(mt8188): add IOMMU enable control in SiP service
feat(mt8188): add display port control in SiP service
fix(mediatek): use uppercase for definition
feat(mediatek): move dp drivers to common folder
feat(mediatek): move mtk_cirq.c drivers to cirq folder
feat(mt8188): initialize GIC
feat(mt8188): initialize systimer
feat(mt8188): initialize platform for MediaTek MT8188
refator(mediatek): remove unused files
refator(mediatek): move drivers folder in common to plat/mediatek
feat(mediatek): support coreboot BL31 loading