add audio

hc

2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/drivers/input/joystick/maplecontrol.c
..
..
@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *	SEGA Dreamcast controller driver
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  *	Based on drivers/usb/iforce.c