[PATCH v3] clk: mediatek: Make mtk_clk_register_mux() a static function

[Stephen Boyd]

Quoting Weiyi Lu (2020-11-13 00:29:52)
> mtk_clk_register_mux() should be a static function
> 
> Fixes: a3ae549917f16 ("clk: mediatek: Add new clkmux register API")
> Signed-off-by: Weiyi Lu <weiyi.lu at mediatek.com>
> ---

Applied to clk-next