ALSA: hda - Fix resume of auto-config mode with Realtek codecs

ALSA: hda - Fix resume of auto-config mode with Realtek codecs

upstream commit: 07bc76dfa19b10017b518dd9aa1b2719e8c863de

The auto-config mode of Realtek ALC codecs has a bug since 2.6.25
that it cannot resume properly.  The problem was the wrong assignment
of init_hook that overrides the whole initialization.

Relevant bug reports:
	http://bugzilla.kernel.org/show_bug.cgi?id=10662
	https://bugzilla.novell.com/show_bug.cgi?id=385473

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>