Add metadata partition

Bug: 128222953
Test: boot
Change-Id: I7d45caea782af583751045a990973af56ee1e29c
diff --git a/shared/BoardConfig.mk b/shared/BoardConfig.mk
index 540634c..e536dfa 100644
--- a/shared/BoardConfig.mk
+++ b/shared/BoardConfig.mk
@@ -26,6 +26,8 @@
 BOARD_VENDORIMAGE_PARTITION_SIZE := 268435456 # 256 MB
 TARGET_COPY_OUT_VENDOR := vendor
 
+BOARD_USES_METADATA_PARTITION := true
+
 ifeq ($(TARGET_BUILD_SYSTEM_ROOT_IMAGE),true)
 BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
 endif