By prepending the SYSLINUX_ROOT to the APPEND line, will allow a sane default
to be set for the various syslinux images
(From OE-Core rev: 47f53bc7998aa8390f846e939b6a7f6df3789777)
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>