staging: bcm2835-audio: select BCM2835_VCHIQ rather then depending on it.

Change the audio's dependency on BCM2835_VCHIQ to a select
since audio support is typically more important to people
then base VCHIQ(which they may not even know what it's for).

Also, with a dependency the audio support would not be
visiable until VCHIQ is selected first, and that may
not be what most people would expect.
Signed-off-by: NMichael Zoran <mzoran@crowfest.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/bcm2835-audio/Kconfig

 config SND_BCM2835
         tristate "BCM2835 Audio"
-        depends on ARCH_BCM2835 && BCM2835_VCHIQ && SND
+        depends on ARCH_BCM2835 && SND
         select SND_PCM
+        select BCM2835_VCHIQ
         help
           Say Y or M if you want to support BCM2835 built in audio