clk: mediatek: mt8192: add mtk_clk_simple_remove

clk: mediatek: mt8192: add mtk_clk_simple_remove

mt8192 is already using mtk_clk_simple_probe,
but not mtk_clk_simple_remove.

Let's add mtk_clk_simple_remove for mt8192.

Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220922091841.4099-8-miles.chen@mediatek.com
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>