clk: hisilicon: Remove unnecessary cast of mux table to u32 *

Now that clk_register_mux_table takes a const u32 *, we don't need the
cast anymore.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20220205103613.1216218-5-j.neuschaefer@gmx.net


Signed-off-by: Stephen Boyd <sboyd@kernel.org>