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In mt8195 suspend/resume flow, ATF has to communicate with a subsys by
read/write the subsys registers. However, the register region of subsys
doesn't include in the MMU mapping region. It triggers MMU faults.

This patch extends the MMU region 0 size to cover all mt8195 HW modules.
This patch also remove MMU region 1 because region 0 covers region 1.

Change-Id: I3a186ed71d0d963b59ae55e27a6d27a01fe4f638
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>

MTK display port mute/unmute control registers need to be
set in secure world.
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Iec73650e937bd20e25c18fa28d55ae29e68b10d3

- Add basic platform setup
- Add MT8195 documentation at docs/plat/
- Add generic CPU helper functions
- Add basic register address

Change-Id: I7978e2f32e58900e5cf93f741ee8eaf8b8e3b842
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>