Merge changes from topic "mediatek upstream" into integration

* changes:
  refactor(mt8188): move platform_def.h to mt8188/include
  feat(mt8188): add MCUSYS support
  feat(mt8188): add armv8.2 support
  feat(mt8188): add DFD control in SiP service
  feat(mt8188): add EMI MPU basic drivers
  feat(mt8188): add DCM driver
  feat(mt8188): add reset and poweroff functions
  feat(mediatek): add more flexibility of mtk_pm.c
  feat(mediatek): add more options for build helper
  feat(mt8188): add LPM driver support
  feat(mt8188): apply ERRATA for CA-78
  fix(mediatek): remove unused cold_boot.[c|h]
  fix(mediatek): wrap cold_boot.h with MTK_SIP_KERNEL_BOOT_ENABLE
  feat(mt8186): add EMI MPU support for SCP and DSP