sm6225-common: Setup A/B partitions

Change-Id: I5a8a92927a30a16898a11b1e5faee84147945e6f
diff --git a/BoardConfigCommon.mk b/BoardConfigCommon.mk
index 508639c..173fa5f 100644
--- a/BoardConfigCommon.mk
+++ b/BoardConfigCommon.mk
@@ -9,6 +9,23 @@
 
 COMMON_PATH := device/xiaomi/sm6225-common
 
+# A/B
+AB_OTA_PARTITIONS += \
+    boot \
+    dtbo \
+    init_boot \
+    odm \
+    product \
+    recovery \
+    system \
+    system_dlkm \
+    system_ext \
+    vbmeta \
+    vbmeta_system \
+    vendor \
+    vendor_boot \
+    vendor_dlkm
+
 # Architecture
 TARGET_ARCH := arm64
 TARGET_ARCH_VARIANT := armv8-a