Phanbell: Update config to allow fdt apply command

Change-Id: Id0de5bd16c32e6a91ab4a5b18ca71b6dc2dc9c94
diff --git a/configs/mx8mq_phanbell_defconfig b/configs/mx8mq_phanbell_defconfig
index 9c09955..74a6fdc 100644
--- a/configs/mx8mq_phanbell_defconfig
+++ b/configs/mx8mq_phanbell_defconfig
@@ -7,6 +7,7 @@
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y
 CONFIG_OF_LIBFDT=y
+CONFIG_OF_LIBFDT_OVERLAY=y
 CONFIG_BOOTDELAY=3
 CONFIG_CMD_CACHE=y
 CONFIG_DEFAULT_DEVICE_TREE="fsl-imx8mq-phanbell"