usb: typec: fsa4480: rework mux & switch setup to handle more states

In order to handle the Audio Accessory mode, refactor the mux
and switch setup in a single function.

The refactor will help add new states and make the process
simpler to understand.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230614-topic-sm8550-upstream-type-c-audio-v1-2-15a92565146b@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>