Add pcluster and deduplication support for erofs images.

This adds BOARD_xIMAGE_EROFS_PCLUSTER_SIZE and
BOARD_EROFS_PCLUSTER_SIZE, which set the "pcluster size" of erofs images
for individual images or all erofs images respectively. The pcluster
size affects the maximum size of a physical compressed block.

This also adds BOARD_EROFS_SHARE_DUP_BLOCKS, which turns on chunk
support in EROFS.

Bug: 201685920
Test: manual test
Change-Id: I27ec0899f89890562796dd9fa567fc74182fbefb
diff --git a/core/Makefile b/core/Makefile
index 352ab1a..e1f20f0 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1617,7 +1617,8 @@
 # $(2) the image prop file
 define add-common-ro-flags-to-image-props
 $(eval _var := $(call to-upper,$(1)))
-$(if $(BOARD_$(_var)IMAGE_EROFS_COMPRESSOR),$(hide) echo "$(1)_erofs_compressor"$(BOARD_$(_var)IMAGE_EROFS_COMPRESSOR)" >> $(2))
+$(if $(BOARD_$(_var)IMAGE_EROFS_COMPRESSOR),$(hide) echo "$(1)_erofs_compressor=$(BOARD_$(_var)IMAGE_EROFS_COMPRESSOR)" >> $(2))
+$(if $(BOARD_$(_var)IMAGE_EROFS_PCLUSTER_SIZE),$(hide) echo "$(1)_erofs_pcluster_size=$(BOARD_$(_var)IMAGE_EROFS_PCLUSTER_SIZE)" >> $(2))
 $(if $(BOARD_$(_var)IMAGE_EXTFS_INODE_COUNT),$(hide) echo "$(1)_extfs_inode_count=$(BOARD_$(_var)IMAGE_EXTFS_INODE_COUNT)" >> $(2))
 $(if $(BOARD_$(_var)IMAGE_EXTFS_RSV_PCT),$(hide) echo "$(1)_extfs_rsv_pct=$(BOARD_$(_var)IMAGE_EXTFS_RSV_PCT)" >> $(2))
 $(if $(BOARD_$(_var)IMAGE_F2FS_SLOAD_COMPRESS_FLAGS),$(hide) echo "$(1)_f2fs_sldc_flags=$(BOARD_$(_var)IMAGE_F2FS_SLOAD_COMPRESS_FLAGS)" >> $(2))
@@ -1697,6 +1698,8 @@
 $(if $(INTERNAL_USERIMAGES_SPARSE_SQUASHFS_FLAG),$(hide) echo "squashfs_sparse_flag=$(INTERNAL_USERIMAGES_SPARSE_SQUASHFS_FLAG)" >> $(1))
 $(if $(INTERNAL_USERIMAGES_SPARSE_F2FS_FLAG),$(hide) echo "f2fs_sparse_flag=$(INTERNAL_USERIMAGES_SPARSE_F2FS_FLAG)" >> $(1))
 $(if $(BOARD_EROFS_COMPRESSOR),$(hide) echo "erofs_default_compressor=$(BOARD_EROFS_COMPRESSOR)" >> $(1))
+$(if $(BOARD_EROFS_PCLUSTER_SIZE),$(hide) echo "erofs_pcluster_size=$(BOARD_EROFS_PCLUSTER_SIZE)" >> $(1))
+$(if $(BOARD_EROFS_SHARE_DUP_BLOCKS),$(hide) echo "erofs_share_dup_blocks=$(BOARD_EROFS_SHARE_DUP_BLOCKS)" >> $(1))
 $(if $(BOARD_EXT4_SHARE_DUP_BLOCKS),$(hide) echo "ext4_share_dup_blocks=$(BOARD_EXT4_SHARE_DUP_BLOCKS)" >> $(1))
 $(if $(BOARD_FLASH_LOGICAL_BLOCK_SIZE), $(hide) echo "flash_logical_block_size=$(BOARD_FLASH_LOGICAL_BLOCK_SIZE)" >> $(1))
 $(if $(BOARD_FLASH_ERASE_BLOCK_SIZE), $(hide) echo "flash_erase_block_size=$(BOARD_FLASH_ERASE_BLOCK_SIZE)" >> $(1))