pcm038: mux configuration for predefined gpio line

Signed-off-by: Luotao Fu <l.fu@pengutronix.de>
diff --git a/arch/arm/mach-mx2/pcm038.c b/arch/arm/mach-mx2/pcm038.c
index 9a3483c..ee65dda 100644
--- a/arch/arm/mach-mx2/pcm038.c
+++ b/arch/arm/mach-mx2/pcm038.c
@@ -216,6 +216,9 @@
 
 	mxc_register_device(&mxc_i2c_device1, &pcm038_i2c_1_data);
 
+	/* PE18 for user-LED D40 */
+	mxc_gpio_mode(GPIO_PORTE | 18 | GPIO_GPIO | GPIO_OUT);
+
 	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 
 #ifdef CONFIG_MACH_PCM970_BASEBOARD