sparc64: vcc: make ktermios const

Make this const as it is not modified anywhere.

Signed-off-by: Bhumika Goyal <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/tty/vcc.c

···
  * add anything that will cause echoing or we'll go into recursive
  * loop echoing chars back and forth with the console drivers.
  */
-static struct ktermios vcc_tty_termios = {
+static const struct ktermios vcc_tty_termios = {
 	.c_iflag = IGNBRK | IGNPAR,
 	.c_oflag = OPOST,
 	.c_cflag = B38400 | CS8 | CREAD | HUPCL,