hwmixvolume: use four spaces instead of one tab for indent

This is the recommended coding style for all Python programs, as
specified in PEP-0008[1].

[1] https://www.python.org/dev/peps/pep-0008/

Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Emmanuel Gil Peyrot 2018-09-18 15:42:31 +02:00 committed by Takashi Iwai
parent 235d9c5e83
commit 50e9ac4e81