add stmac read mac form eeprom

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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/include/linux/mailbox_client.h
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@@ -1,10 +1,7 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2013-2014 Linaro Ltd.
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  * Author: Jassi Brar <jassisinghbrar@gmail.com>
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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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 #ifndef __MAILBOX_CLIENT_H
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@@ -44,6 +41,7 @@
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 					      const char *name);
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 struct mbox_chan *mbox_request_channel(struct mbox_client *cl, int index);
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 int mbox_send_message(struct mbox_chan *chan, void *mssg);
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+int mbox_flush(struct mbox_chan *chan, unsigned long timeout);
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 void mbox_client_txdone(struct mbox_chan *chan, int r); /* atomic */
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 bool mbox_client_peek_data(struct mbox_chan *chan); /* atomic */
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 void mbox_free_channel(struct mbox_chan *chan); /* may sleep */