clk: loongson1: Terminate clk_div_table with sentinel element

In order that the end of a clk_div_table can be detected, it must be
terminated with a sentinel element (.div = 0).

Fixes: b4626a7f ("CLK: Add Loongson1C clock support")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Link: https://lore.kernel.org/r/20220218000922.134857-3-j.neuschaefer@gmx.net


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