[newlib-cygwin] Cygwin: Add description of fsync() fix to 3.3.5 release notes.

[Takashi Yano]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=ed32020682d49eb51c4a4f3563d46390f11158dc

commit ed32020682d49eb51c4a4f3563d46390f11158dc
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Tue Mar 15 08:15:29 2022 +0900

    Cygwin: Add description of fsync() fix to 3.3.5 release notes.

Diff:
---
 winsup/cygwin/release/3.3.5 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/winsup/cygwin/release/3.3.5 b/winsup/cygwin/release/3.3.5
index ce7a21268..752d65703 100644
--- a/winsup/cygwin/release/3.3.5
+++ b/winsup/cygwin/release/3.3.5
@@ -36,3 +36,7 @@ Bug Fixes
 - Fix a bug that the order of the console key inputs are occasionally
   swapped, especially when CPU load is high.
   Addresses: https://cygwin.com/pipermail/cygwin/2022-February/250957.html
+
+- Fix a problem that fsync() flushes the console input buffer unlike
+  linux. fsync() should return EINVAL for special files such as tty.
+  Addresses: https://cygwin.com/pipermail/cygwin/2022-March/251022.html