drivers: net: irda: bfin_sir: fix compile error

Bit IREN is replaced by UMOD_IRDA and UMOD_MASK since blackfin 60x added, but
this driver didn't update which will cause bfin_sir build error:

drivers/net/irda/bfin_sir.c:161:9: error: 'IREN' undeclared (first use in this
function)
drivers/net/irda/bfin_sir.c:435:18: error: 'IREN' undeclared (first use in
this function)
drivers/net/irda/bfin_sir.c:521:11: error: 'IREN' undeclared (first use in
this function)

This patch fix it.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Acked-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/irda/bfin_sir.c

@@ -158,7 +158,7 @@ static int bfin_sir_set_speed(struct bfin_sir_port *port, int speed)
 	/* If not add the 'RPOLC', we can't catch the receive interrupt.
 	 * It's related with the HW layout and the IR transiver.
 	 */
-	val |= IREN | RPOLC;
+	val |= UMOD_IRDA | RPOLC;
 	UART_PUT_GCTL(port, val);
 	return ret;
 }
@@ -432,7 +432,7 @@ static void bfin_sir_shutdown(struct bfin_sir_port *port, struct net_device *dev
 	bfin_sir_stop_rx(port);
 
 	val = UART_GET_GCTL(port);
-	val &= ~(UCEN | IREN | RPOLC);
+	val &= ~(UCEN | UMOD_MASK | RPOLC);
 	UART_PUT_GCTL(port, val);
 
 #ifdef CONFIG_SIR_BFIN_DMA
@@ -518,10 +518,10 @@ static void bfin_sir_send_work(struct work_struct *work)
 	 * reset all the UART.
 	 */
 	val = UART_GET_GCTL(port);
-	val &= ~(IREN | RPOLC);
+	val &= ~(UMOD_MASK | RPOLC);
 	UART_PUT_GCTL(port, val);
 	SSYNC();
-	val |= IREN | RPOLC;
+	val |= UMOD_IRDA | RPOLC;
 	UART_PUT_GCTL(port, val);
 	SSYNC();
 	/* bfin_sir_set_speed(port, self->speed); */