Fix FLUSHO value on Sparc64

Author: gnzlbg

src/unix/notbsd/linux/other/b64/sparc64.rs

@@ -495,7 +495,7 @@ pub const VEOL2: usize = 6;
 pub const VMIN: usize = 4;
 pub const IEXTEN: ::tcflag_t = 0x8000;
 pub const TOSTOP: ::tcflag_t = 0x100;
-pub const FLUSHO: ::tcflag_t = 0x2000;
+pub const FLUSHO: ::tcflag_t = 0x1000;
 pub const EXTPROC: ::tcflag_t = 0x10000;
 pub const TCGETS: ::c_ulong = 0x40245408;
 pub const TCSETS: ::c_ulong = 0x80245409;