refine product / board definition

redroid_arm64/BoardConfig.mk

@@ -9,6 +9,13 @@ MINIMAL_FONT_FOOTPRINT := false
 # use seperate vendor partition
 TARGET_COPY_OUT_VENDOR := vendor
 
+BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
+
+TARGET_USERIMAGES_SPARSE_EXT_DISABLED := true
+
+BOARD_VENDORIMAGE_PARTITION_SIZE := 367001600
+BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
+
 BOARD_GPU_DRIVERS := virgl radeonsi
 
 DEVICE_MANIFEST_FILE := device/redroid/manifest.xml