[ALSA] hda-codec - Fix detection of supported sample rates

Don't include 9.6kHz in the list of supported sample rates.
Since this rate isn't indicated in AC_PAR_PCM parameter,
the driver might guess wrongly as if it's available.

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