Merge branch 'remove-redundant-functions-and-use-generic-functions'

Li Zetao says:

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Remove redundant functions and use generic functions

This patch set removes some redundant functions. In the network module,
two generic functions are provided to convert u64 value and Ethernet
MAC address. Using generic functions helps reduce redundant code and
improve code readability.
====================

Link: https://lore.kernel.org/r/20230808114504.4036008-1-lizetao1@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>