TTY: cleanup tty->hw_stopped uses

tty->hw_stopped is set only by drivers to remember HW state. If it is
never set to 1 in a particular driver, there is no need to check it in
the driver at all. Remove such checks.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index d97e194..cbf1d15 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -162,7 +162,7 @@
 /*
  * Driver internal routine, used by both tty(serial core) as well as tx-isr
  *  -Called under spinlock in either cases
- *  -also tty->stopped / tty->hw_stopped has already been checked
+ *  -also tty->stopped has already been checked
  *     = by uart_start( ) before calling us
  *     = tx_ist checks that too before calling
  */