staging: bcm2835-audio: Update driver description

The audio driver description contains a reference to a card.
Since this is for built in audio, drop the card reference
from the description.
Signed-off-by: Michael Zoran <mzoran@crowfest.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/bcm2835-audio/Kconfig

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