drivers: clk: Fix void pointer to enum cast

drivers/clk/samsung/clk-exynos-audss.c:93:12: error: cast to smaller integer type 'enum exynos_audss_clk_type' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast]
        variant = (enum exynos_audss_clk_type)match->data;