defconfig: sdm670: Enable USB UAC 2.0 drivers

Enable USB UAC2.0 peripheral function driver that enables
UAC 2.0 version based audio over USB.

Change-Id: I857f5142a564e9f768e681c20cd802540444ca1d
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>
diff --git a/arch/arm64/configs/sdm670_defconfig b/arch/arm64/configs/sdm670_defconfig
index f6c3ec7..ef8e775 100644
--- a/arch/arm64/configs/sdm670_defconfig
+++ b/arch/arm64/configs/sdm670_defconfig
@@ -425,6 +425,7 @@
 CONFIG_USB_CONFIGFS_F_ACC=y
 CONFIG_USB_CONFIGFS_F_AUDIO_SRC=y
 CONFIG_USB_CONFIGFS_UEVENT=y
+CONFIG_USB_CONFIGFS_F_UAC2=y
 CONFIG_USB_CONFIGFS_F_MIDI=y
 CONFIG_USB_CONFIGFS_F_HID=y
 CONFIG_USB_CONFIGFS_F_DIAG=y