There was a bug in the code when managing a GE IP-OCTAL-485 board. The RX would
be enabled but we have a wrong state in the rx_enable flag.

Then, if the user changes the terminal settings, RX would not be enabled again.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>