clk: cs2000-cp: freeze config during register fiddling

Make sure to freeze the configuration of the chip during the programming
of 32-bit registers. This avoids the processing of invalid intermediate
states.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Link: https://lore.kernel.org/r/20220125093336.226787-9-daniel@zonque.org


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