OCC: Add ability to have OP920 version

Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
diff --git a/openpower/configs/witherspoon_dev_defconfig b/openpower/configs/witherspoon_dev_defconfig
index ddbe7a9..dbebdae 100644
--- a/openpower/configs/witherspoon_dev_defconfig
+++ b/openpower/configs/witherspoon_dev_defconfig
@@ -61,6 +61,7 @@
 BR2_PACKAGE_PETITBOOT_MTD=y
 BR2_HCODE_LATEST_VERSION=y
 BR2_OCC_GPU_BIN_BUILD=y
+BR2_OCC_LATEST_VERSION=y
 BR2_CAPP_UCODE_BIN_FILENAME="cappucode.bin"
 BR2_PACKAGE_LOADKEYS=y
 BR2_IMA_CATALOG_DTS="POWER9"