mux: MAINTAINERS: Mark as Odd Fixes

mux: MAINTAINERS: Mark as Odd Fixes

Over last year, several patches for drivers/mux/ were not picked up,
even after multiple pings or resends, so mark the mux subsystem as odd
fixes to clarify actual status of lack of maintainers with dedicated
time and indicate that someone could help here.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250501175303.144102-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>