add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mfd/ac100.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * MFD core driver for X-Powers' AC100 Audio Codec IC
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  *
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@@ -12,10 +13,6 @@
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  * Copyright (2016) Chen-Yu Tsai
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  *
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  * Author: Chen-Yu Tsai <wens@csie.org>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/interrupt.h>