a native lzop is only needed when an lzo compressed initramfs is actually present
(From OE-Core rev: 1217ddf070261c5fe523729b2a833bd38f1e4ccd)
Signed-off-by: Timon Ulrich <t.ulrich@anapur.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>