add audio

hc

2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/sound/usb/hiface/Makefile
..
..
@@ -1,2 +1,3 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 snd-usb-hiface-objs := chip.o pcm.o
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 obj-$(CONFIG_SND_USB_HIFACE) += snd-usb-hiface.o