linux-phytec-ti

clk: sunxi-ng: mux: support fixed pre-dividers on multiple parents

Some clocks on the A31 have fixed pre-dividers on multiple parents.
Add support for them.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>