pcm037: add rts/cts support for serial port

We have rts/cts pins on the first serial port on the pcm037. Enable it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx3/pcm037.c

@@ -54,7 +54,7 @@ static struct platform_device pcm037_flash = {
 };
 
 static struct imxuart_platform_data uart_pdata = {
-	.flags = 0,
+	.flags = IMXUART_HAVE_RTSCTS,
 };
 
 static struct platform_device *devices[] __initdata = {