[11U68]fix P0_11 to use GPIO

Fork of mbed-src by mbed official

Revision:
548:1abac31e188e
Parent:
535:35ad5cbb2f6a
--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/TARGET_EFM32ZG_STK3200/device.h	Fri May 22 09:45:08 2015 +0100
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/TARGET_EFM32ZG_STK3200/device.h	Fri May 22 10:45:46 2015 +0100
@@ -45,7 +45,7 @@
 #define DEVICE_PWMOUT           1
 
 #define DEVICE_SLEEP            1
- 
+
 #define DEVICE_STDIO_MESSAGES   1
 
 #define DEVICE_LOWPOWERTIMER    1