kbuild: add comment about why cmd_shipped uses 'cat'
cmd_shipped uses 'cat' instead of 'cp' for copying a file. The reason
is explained in the commit [1], but it was in the pre-git era.
$ touch a
$ chmod -w a
$ cp a b
$ cp a b
cp: cannot create regular file 'b': Permission denied
Add comments so that you can see the reason without looking into
the history.
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/?id=a70dba8086160449cc94c5bdaff78419b6b8e3c8
Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org>
parent
c5849b7c
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