clk: mediatek: Add MT8195 infrastructure clock support

Add MT8195 infrastructure clock controller which provides
clock gate control for basic IP like pwm, uart, spi and so on.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Link: https://lore.kernel.org/r/20210914021633.26377-10-chun-jie.chen@mediatek.com


Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>