Add TCSETSF to unpriv_tty_ioctls.

This allows calling tcsetattr() with TCSAFLUSH, in addition to TCSANOW
and TCSADRAIN.

Fixes: 172740382
Test: manual
Change-Id: Idd2e9e0db2e0210df515f46d9d0323c6b517dd39
diff --git a/public/ioctl_macros b/public/ioctl_macros
index 4538962..52208c7 100644
--- a/public/ioctl_macros
+++ b/public/ioctl_macros
@@ -49,8 +49,8 @@
 # commonly used TTY ioctls
 # merge with unpriv_unix_sock_ioctls?
 define(`unpriv_tty_ioctls', `{
-  TIOCOUTQ FIOCLEX FIONCLEX TCGETS TCSETS TIOCGWINSZ TIOCSWINSZ TIOCSCTTY
-  TCSETSW TCFLSH TIOCSPGRP TIOCGPGRP
+  TIOCOUTQ FIOCLEX FIONCLEX TCGETS TCSETS TCSETSW TCSETSF TIOCGWINSZ TIOCSWINSZ
+  TIOCSCTTY TCFLSH TIOCSPGRP TIOCGPGRP
 }')
 
 # point to point ioctls