[PATCH v3 10/15] clk: mediatek: Add MT8186 imgsys clock support

[Miles Chen]

>Add MT8186 imgsys clock controllers which provide clock gate
>control for image IP blocks.
>
>Signed-off-by: Chun-Jie Chen <chun-jie.chen at mediatek.com>
>Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>

Reviewed-by: Miles Chen <miles.chen at mediatek.com>