ALSA: hda - Fix missing stream for second ADC on Realtek ALC260 HDA codec

I discovered tonight that ALSA no longer sets up a stream for the second ADC
provided by the Realtek ALC260 HDA codec.  At some point alc_build_pcms()
started using stream_analog_alt_capture when constructing the second ADC
stream, but patch_alc260() was never updated accordingly.  I have no idea
when this regression occurred.  The trivial patch to patch_alc260() given
below fixes the problem as far as I can tell.  The patch is against 2.6.35.
Signed-off-by: Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -7042,6 +7042,7 @@ static int patch_alc260(struct hda_codec *codec)
 
 	spec->stream_analog_playback = &alc260_pcm_analog_playback;
 	spec->stream_analog_capture = &alc260_pcm_analog_capture;
+	spec->stream_analog_alt_capture = &alc260_pcm_analog_capture;
 
 	spec->stream_digital_playback = &alc260_pcm_digital_playback;
 	spec->stream_digital_capture = &alc260_pcm_digital_capture;