ALSA: hda - Add missing initializations for ALC268 and ALC269

During the changes to clean up / fix the realtek codec initialization
routines in commit 4a79ba34

,
I forgot to add the check for ALC268 and ALC269.
This resulted in the missing EAPD and COEF setup for these codecs.

This patch adds the missing checks for these codecs.

Reference: bko#13633
	http://bugzilla.kernel.org/show_bug.cgi?id=13633

Signed-off-by: Takashi Iwai <tiwai@suse.de>