ALSA: hda_intel: add position_fix quirk for Asus K53E

ALSA: hda_intel: add position_fix quirk for Asus K53E

Commit 24ed3c20e27a2cb9ce918e7a93e7cbd54f75d335 changed some chipsets to
default to POS_FIX_COMBO so they now use POS_FIX_LPIB instead of
POS_FIX_POSBUF. Since then I've been getting artifacts on playback, including
repeated sounds on my Asus laptop.

My hardware is Cougar Point which the commit log of
24ed3c20e27a2cb9ce918e7a93e7cbd54f75d335 mentions as tested so POS_FIX_COMBO
probably works in general but apparently it doesn't on Asus K53E therefore the
need for the quirk.

Signed-off-by: Catalin Iacob <iacobcatalin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>