ALSA: ice1712/ice1724: Coding style fixes part 1 (more coming up)

Inspired by Alexander Beregalov's patches for wtm and aureon.c,
I decided to run checkpatch on some more files. After some work
checkpatch.pl-0.23 --no-tree --file --strict <file> reports
0 errors, 0 warnings, 0 checks, n lines checked for:
phase.c
phase.h
juli.c (1 check about unused code, maybe we should comment it)
juli.h (no changes necessary)
In other files I have just fixed // comments and long lines along the
way (but not all of them), more coming up.

Signed-off-by: Vedran Miletic <rivanvx@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>