ALSA: ice1724.c: fix coding style

before:
total: 96 errors, 66 warnings, 2612 lines checked

after:
total: 11 errors, 64 warnings, 2624 lines checked

Compile tested only.
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>