ARM: bcm2835_defconfig: Enable bcm2835-audio

This enables the bcm2835-audio driver, which depends on bcm2835-vchiq.
After that we gain more test coverage (e.g. Kernel CI).
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>

arch/arm/configs/bcm2835_defconfig

@@ -128,7 +128,7 @@ CONFIG_LEDS_TRIGGER_CAMERA=y
 CONFIG_DMADEVICES=y
 CONFIG_DMA_BCM2835=y
 CONFIG_STAGING=y
-CONFIG_BCM2835_VCHIQ=m
+CONFIG_SND_BCM2835=m
 CONFIG_MAILBOX=y
 CONFIG_BCM2835_MBOX=y
 # CONFIG_IOMMU_SUPPORT is not set