tty: serial: lpuart: fix lpuart32_write usage

	spin_lock_irqsave(&sport->port.lock, flags);

	/* Disable Rx & Tx */

	lpuart32_write(&sport->port, UARTCTRL, 0);

	lpuart32_write(&sport->port, 0, UARTCTRL);

	temp = lpuart32_read(&sport->port, UARTFIFO);

	/* Enable Rx and Tx FIFO */

	lpuart32_write(&sport->port, UARTFIFO,

		       temp | UARTFIFO_RXFE | UARTFIFO_TXFE);

	lpuart32_write(&sport->port, temp | UARTFIFO_RXFE | UARTFIFO_TXFE, UARTFIFO);

	/* flush Tx and Rx FIFO */

	lpuart32_write(&sport->port, UARTFIFO,

		       UARTFIFO_TXFLUSH | UARTFIFO_RXFLUSH);

	lpuart32_write(&sport->port, UARTFIFO_TXFLUSH | UARTFIFO_RXFLUSH, UARTFIFO);

	/* explicitly clear RDRF */

	if (lpuart32_read(&sport->port, UARTSTAT) & UARTSTAT_RDRF) {

		lpuart32_read(&sport->port, UARTDATA);

		lpuart32_write(&sport->port, UARTFIFO, UARTFIFO_RXUF);

		lpuart32_write(&sport->port, UARTFIFO_RXUF, UARTFIFO);

	}

	/* Enable Rx and Tx */

	lpuart32_write(&sport->port, UARTCTRL, UARTCTRL_RE | UARTCTRL_TE);

	lpuart32_write(&sport->port, UARTCTRL_RE | UARTCTRL_TE, UARTCTRL);

	spin_unlock_irqrestore(&sport->port.lock, flags);

	return 0;

static void lpuart32_poll_put_char(struct uart_port *port, unsigned char c)

{

	lpuart32_wait_bit_set(port, UARTSTAT, UARTSTAT_TDRE);

	lpuart32_write(port, UARTDATA, c);

	lpuart32_write(port, c, UARTDATA);

}

static int lpuart32_poll_get_char(struct uart_port *port)