ARM: at91: sama5_defconfig: enable USB audio device support

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
[cristian.birsan: adapt to v6.6.9]
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>

Author: cristibirsan

arch/arm/configs/sama5_defconfig

@@ -246,6 +246,7 @@ CONFIG_BACKLIGHT_CLASS_DEVICE=y
 CONFIG_BACKLIGHT_PWM=y
 CONFIG_SOUND=y
 CONFIG_SND=y
+CONFIG_SND_USB_AUDIO=y
 CONFIG_SND_SOC=y
 CONFIG_SND_ATMEL_SOC=y
 CONFIG_SND_ATMEL_SOC_WM8904=y