ALSA: asoc: n810 - fix build error.

This patch adds a missing " that was recently introduced (removed)
in the DAI struct merge patch series.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>