socat: upgrade 1.8.1.0 -> 1.8.1.1

socat: upgrade 1.8.1.0 -> 1.8.1.1

Drop patch:
   0001-fix-compile-failed-with-musl.patch
which is merged upstream:
   a235f59 Avoid compilation issue in xio-netlink.c with Musl libc

commit log:

4ce8786 Version 1.8.1.1
f13b27d A few minor corrections
d5a2c46 Fixed a few buffer read overruns
b314687 Fixed issue with POSIXMQ in unidirectional context
a235f59 Avoid compilation issue in xio-netlink.c with Musl libc
a7058c9 Fixed strchr with const for new glibc
35d5da1 Fixed timestamps of -v and -x (really)

Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>