sm8550-common: Define kernel and partition flags

Change-Id: Ieb09ea13eade048617dce47ebd73fece7b8af6d9

common.mk

@@ -16,6 +16,23 @@ $(call inherit-product, $(SRC_TARGET_DIR)/product/virtual_ab_ota/launch_with_ven
 # Setup dalvik vm configs
 $(call inherit-product, frameworks/native/build/phone-xhdpi-6144-dalvik-heap.mk)
 
+# A/B
+AB_OTA_POSTINSTALL_CONFIG += \
+    RUN_POSTINSTALL_system=true \
+    POSTINSTALL_PATH_system=system/bin/otapreopt_script \
+    FILESYSTEM_TYPE_system=ext4 \
+    POSTINSTALL_OPTIONAL_system=true
+
+AB_OTA_POSTINSTALL_CONFIG += \
+    RUN_POSTINSTALL_vendor=true \
+    POSTINSTALL_PATH_vendor=bin/checkpoint_gc \
+    FILESYSTEM_TYPE_vendor=ext4 \
+    POSTINSTALL_OPTIONAL_vendor=true
+
+PRODUCT_PACKAGES += \
+    checkpoint_gc \
+    otapreopt_script
+
 # Init
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/init/fstab.qcom:$(TARGET_COPY_OUT_VENDOR_RAMDISK)/first_stage_ramdisk/fstab.qcom