debugfs: document that debugfs_remove*() accepts NULL and error values

According to commit a59d6293e537 ("debugfs: change parameter check in
debugfs_remove() functions"), this is meant to make cleanup easier for
callers. In that case it ought to be documented.

Signed-off-by: Ulf Magnusson <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
1 file changed