[newlib-cygwin] Add SOL_SOCKET level socket option

[newlib-cygwin] Add SOL_SOCKET level socket option

[Sebastian Huber]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=fe3e8b90dc47bda41f697cffe1f5b6c0c32be70a

commit fe3e8b90dc47bda41f697cffe1f5b6c0c32be70a
Author: tuexen <tuexen@FreeBSD.org>
Date:   Tue Aug 21 14:04:30 2018 +0000

    Add SOL_SOCKET level socket option
    
    with name SO_DOMAIN to get the domain of a socket.
    
    This is helpful when testing and Solaris and Linux have the same
    socket option using the same name.
    
    Reviewed by:		bcr@, rrs@
    Sponsored by:		Netflix, Inc.
    Differential Revision:	https://reviews.freebsd.org/D16791

Diff:
---
 newlib/libc/sys/rtems/include/sys/socket.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/newlib/libc/sys/rtems/include/sys/socket.h b/newlib/libc/sys/rtems/include/sys/socket.h
index a1ffbbd..f329e3a 100644
--- a/newlib/libc/sys/rtems/include/sys/socket.h
+++ b/newlib/libc/sys/rtems/include/sys/socket.h
@@ -171,6 +171,7 @@ typedef	__uintptr_t	uintptr_t;
 #define	SO_PROTOTYPE	SO_PROTOCOL	/* alias for SO_PROTOCOL (SunOS name) */
 #define	SO_TS_CLOCK	0x1017		/* clock type used for SO_TIMESTAMP */
 #define	SO_MAX_PACING_RATE	0x1018	/* socket's max TX pacing rate (Linux name) */
+#define	SO_DOMAIN	0x1019		/* get socket domain */
 #endif
 
 #if __BSD_VISIBLE