[PATCH] v4l: prevent saa7134 alsa undefined warnings

Prevent the following build warnings:

*** Warning: "snd_card_free"
*** Warning: "snd_card_register"
*** Warning: "snd_device_new"
*** Warning: "snd_card_new"
*** Warning: "snd_ctl_add"
*** Warning: "snd_ctl_new1"
*** Warning: "snd_pcm_set_ops"
*** Warning: "snd_pcm_new"
*** Warning: "snd_pcm_lib_ioctl"
*** Warning: "snd_pcm_hw_constraint_integer"
*** Warning: "snd_pcm_stop"
*** Warning: "snd_pcm_period_elapsed"
[drivers/media/video/saa7134/saa7134-alsa.ko] undefined!

Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Acked-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>