imx: nitrogen6x: Enable bootz

Signed-off-by: Robert Winkler <robert.winkler@boundarydevices.com>
diff --git a/include/configs/nitrogen6x.h b/include/configs/nitrogen6x.h
index 039085e..c5118d1 100644
--- a/include/configs/nitrogen6x.h
+++ b/include/configs/nitrogen6x.h
@@ -285,4 +285,6 @@
 #define CONFIG_CMD_TIME
 #define CONFIG_SYS_ALT_MEMTEST
 
+#define CONFIG_CMD_BOOTZ
+
 #endif	       /* __CONFIG_H */