zenfone8: Add BOARD_EXT4_SHARE_DUP_BLOCKS

Change-Id: Ic1165d34f7693afee021819a77a5186e3e39c349
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 13a6ebd..ae542a9 100755
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -97,6 +97,7 @@
 TARGET_FS_CONFIG_GEN := $(DEVICE_PATH)/config.fs
 
 # Global
+BOARD_EXT4_SHARE_DUP_BLOCKS := true
 BOARD_USES_QCOM_HARDWARE := true
 TARGET_SPECIFIC_HEADER_PATH := $(DEVICE_PATH)/include
 TARGET_SUPPORTS_32_BIT_APPS := true