imx: ventana: config: enable gpio command

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
diff --git a/include/configs/gw_ventana.h b/include/configs/gw_ventana.h
index 69c6202..1ae4a59 100644
--- a/include/configs/gw_ventana.h
+++ b/include/configs/gw_ventana.h
@@ -47,6 +47,7 @@
 
 /* GPIO */
 #define CONFIG_MXC_GPIO
+#define CONFIG_CMD_GPIO
 
 /* Serial */
 #define CONFIG_MXC_UART