ALSA: ice1712/wtm: fix coding style

before:
total: 2 errors, 0 warnings, 20 lines checked
total: 49 errors, 2 warnings, 518 lines checked

after:
total: 0 errors, 0 warnings, 20 lines checked
total: 0 errors, 0 warnings, 518 lines checked

Compile tested, size and code are equal.

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>