MX31: qong: add watchdog

Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/include/configs/qong.h b/include/configs/qong.h
index e2f7a5e..299db5e 100644
--- a/include/configs/qong.h
+++ b/include/configs/qong.h
@@ -52,6 +52,7 @@
 #define CONFIG_SYS_MX31_UART1	1
 
 #define CONFIG_MXC_GPIO
+#define CONFIG_HW_WATCHDOG
 
 #define CONFIG_MXC_SPI
 #define CONFIG_DEFAULT_SPI_BUS	1