add nk_io at24_eeprom driver

hc

2023-02-14 796a7ef0befd21e25c2b9e42f53a6d7a4421941d

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obj-y                += clk.o
obj-$(CONFIG_LOONGSON1_LS1B)    += clk-loongson1b.o
obj-$(CONFIG_LOONGSON1_LS1C)    += clk-loongson1c.o