Upgrade systemd-boot to 239.
The following patch is removed due to recent fix about meson's cpu family
mapping and validation.
0001-Also-check-i386-i586-and-i686-for-ia32.patch
(From OE-Core rev: ff0b682b807959521c85716296de7a1d26d7d18f)
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
