ucm2: Qualcomm: Lenovo-X13s: reduce default headphones volume further

ucm2: Qualcomm: Lenovo-X13s: reduce default headphones volume further

A recent change reduced the default headphones volume from setting 20
(0 dB) to 10 (-15 dB) but also this setting can be quite loud and cause
distortion with some headphones.

Reduce the default volume further to setting 2 (-27 dB), which results
in more comfortable volume levels with such headphones.

Closes: https://github.com/alsa-project/alsa-ucm-conf/pull/387
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>