ALSA: control: tidy up whitespaces Clean up trailing whitespace in preparation for the card components changes. Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20260720103505.1860399-1-mstrozek@opensource.cirrus.com