[ALSA] ice1712 - Fix word clock status control on Delta 1010LT

The 'Word Clock Status' control on Delta 1010LT checks the CS8427
error register too strictly and almost always returns 1 (unlocked).
It should check only the lock status bit.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>