kselftest/alsa: Don't any configuration in the sample config

kselftest/alsa: Don't any configuration in the sample config

The values in the one example configuration file we currently have are the
default values for the two tests we have so there's no need to actually set
them. Comment them out as examples, with a rename for the tests so that we
can update the tests in the code more easily.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221201170745.1111236-5-broonie@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>