tty: add the new termios2 ioctls to the compatible list.

Make them depend on TCGETS2.  If that one is implemented the rest should be
there as well.
Acked-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/compat_ioctl.c

@@ -1954,6 +1954,12 @@ ULONG_IOCTL(TIOCSCTTY)
 COMPATIBLE_IOCTL(TIOCGPTN)
 COMPATIBLE_IOCTL(TIOCSPTLCK)
 COMPATIBLE_IOCTL(TIOCSERGETLSR)
+#ifdef TCGETS2
+COMPATIBLE_IOCTL(TCGETS2)
+COMPATIBLE_IOCTL(TCSETS2)
+COMPATIBLE_IOCTL(TCSETSW2)
+COMPATIBLE_IOCTL(TCSETSF2)
+#endif
 /* Little f */
 COMPATIBLE_IOCTL(FIOCLEX)
 COMPATIBLE_IOCTL(FIONCLEX)