libslirp: upgrade 4.7.0 -> 4.8.0
(From OE-Core rev: c1e109eac0c7fa729ca8751c351306cba5f58564)
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>