[ALSA] ak4114 - Fix a typo in DIF2 bit definition

Fixed a typo in AK4114_DIF2 bit definition.  This may fix some
problems for Audiophile 192 and Juli boards.

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