add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/tty/serdev/Makefile
..
..
@@ -1,3 +1,4 @@
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+# SPDX-License-Identifier: GPL-2.0
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 serdev-objs := core.o
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 obj-$(CONFIG_SERIAL_DEV_BUS) += serdev.o