VIDEO_SAA7134 must depend on SOUND

VIDEO_SAA7134=y and SOUND=n results in the following compile error:

<-- snip -->

...
LD .tmp_vmlinux1
drivers/built-in.o(.text+0x4fafcb): In function `saa7134_initdev':
: undefined reference to unregister_sound_dsp' drivers/built-in.o(.text+0x4fb141): In function saa7134_initdev':
: undefined reference to register_sound_dsp' drivers/built-in.o(.text+0x4fb17c): In function saa7134_initdev':
: undefined reference to register_sound_mixer' drivers/built-in.o(.text+0x4fb339): In function saa7134_finidev':
: undefined reference to unregister_sound_mixer' drivers/built-in.o(.text+0x4fb341): In function saa7134_finidev':
: undefined reference to `unregister_sound_dsp'
make: *** [.tmp_vmlinux1] Error 1

<-- snip -->

@@ -249,7 +249,7 @@
 
 config VIDEO_SAA7134
 	tristate "Philips SAA7134 support"
-	depends on VIDEO_DEV && PCI && I2C
+	depends on VIDEO_DEV && PCI && I2C && SOUND
 	select VIDEO_BUF
 	select VIDEO_IR
 	select VIDEO_TUNER