Add 'Mode' argument to SetLED macro in order to allow setting a
different LED mode. This will allow mute switches with inverted
values to control the LEDs with 'follow-route' option instead of
default 'follow-mute'.
The Mode argument is optional.
Closes: https://github.com/alsa-project/alsa-ucm-conf/pull/637 Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>