conf/ucm: bytcr-rt5651: Do not use both DAC1 and HPVOL inputs for HP

conf/ucm: bytcr-rt5651: Do not use both DAC1 and HPVOL inputs for HP

The headphones can either be driven directly from DAC1, or through
the HP volume mixer chain to allow volume control, both can be enabled
at the same time, but this should not be done.

Mix only DAC1 to the headphones and not the HP volume path, there
are 2 reasons to choice the DAC1 path;
1) It is the power-on-reset default
2) We don't expose the volume control to e.g. pulseaudio anyways so it
   is not useful

While at it also move the "HPO MIX DAC1" and "HPO MIX HPVOL" entries up a
bit so that they are no longer inbetween the "HPO L Playback Switch" and
"HPO R Playback Switch" entries.

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>