gensio: upgrade 2.8.5 -> 2.8.7

Changelog:
==========
- Lots of fixes to unix sockets.
- The addition of unix stream sockets to Windows.
- Unix datagram and seqpacket sockets are now supported.
- For older systems and newer systems whose pselect() operation is non-atomic
  (BSDs, MacOS) there were race conditions and some issues. Most should all be fixed now.
- For MacOS and later BSDs, kevent() is now supported.
- External threads doing gensio calls will now have their signal masks fixed up
  to work properly with gensio.
- gtlsshd was not working on MacOS

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-connectivity/gensio/gensio_2.8.7.bb

@@ -5,7 +5,7 @@ LIC_FILES_CHKSUM = "file://COPYING.LIB;md5=4fbd65380cdd255951079008b364516c \
                     file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263 \
                     "
 
-SRCREV = "a776fb6fd56d5b0aedb1219ca17474faa1705260"
+SRCREV = "e4dbb9687bd5e887fa98a4cdcec012ea85da1ef2"
 
 SRC_URI = "git://github.com/cminyard/gensio;protocol=https;branch=master"