Revert "selftests: firmware: remove use of non-standard diff -Z option"
This reverts commit
f70b472e937bb659a7b7a14e64f07308e230888c.
This breaks testing on Debian, and this patch was NACKed anyway.
The proper way to address this is a quirk for busybox as that is
where the issue is present.
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Fixes:
f70b472e937b ("selftests: firmware: remove use of non-standard diff -Z option")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>