codecs/rt5640: Rename DAPM PIN switches to avoid having 2 Speaker and Headphones...

codecs/rt5640: Rename DAPM PIN switches to avoid having 2 Speaker and Headphones switches

Now that we rename the mutes from their weird 'Channel Switch' postfix
to the standard 'Playback Switch' postfix we end up having 2 Switches
for the 'Speaker' resp. 'Headphones' volume controls, with 1 of the two
getting ignored by the alsa-lib mixer code because it is duplicate.

This is caused by the bytcr-rt5640 machine driver adding DAPM PIN
Switches which are named 'Headphone Switch' resp. 'Speaker Switch',
rename these to 'Headphone Output Switch' / 'Speaker Output Switch'
so that they get seen as separate controls by the alsa-lib mixer code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>