Move make_recovery_path and sparse_img to modules.

These two tools are only used within build system, so not adding them
to otatools.zip.

Bug: 63866463
Test: TreeHugger
Test: Build a non-A/B target that calls make_recovery_patch.
Change-Id: Iaeddc98a2c4a27c6b49d91047500029e460db9e3
diff --git a/core/Makefile b/core/Makefile
index 5b2f4e8..6ced027 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -3434,8 +3434,7 @@
 # (1): list of items like "system", "vendor", "product", "system_ext"
 # return: map each item into a command ( wrapped in $$() ) that reads the size
 define read-size-of-partitions
-$(foreach image,$(call images-for-partitions,$(1)),$$( \
-    build/make/tools/releasetools/sparse_img.py --get_partition_size $(image)))
+$(foreach image,$(call images-for-partitions,$(1)),$$($(SPARSE_IMG) --get_partition_size $(image)))
 endef
 
 # round result to BOARD_SUPER_PARTITION_ALIGNMENT
@@ -3472,7 +3471,7 @@
 
 # Add image dependencies so that generated_*_image_info.txt are written before checking.
 $(check_all_partition_sizes_file): \
-    build/make/tools/releasetools/sparse_img.py \
+    $(SPARSE_IMG) \
     $(call images-for-partitions,$(BOARD_SUPER_PARTITION_PARTITION_LIST))
 
 ifeq ($(PRODUCT_RETROFIT_DYNAMIC_PARTITIONS),true)
@@ -4018,9 +4017,8 @@
 	    $(SOONG_APEX_KEYS_FILE) \
 	    $(SOONG_ZIP) \
 	    $(HOST_OUT_EXECUTABLES)/fs_config \
-	    $(HOST_OUT_EXECUTABLES)/imgdiff \
-	    $(HOST_OUT_EXECUTABLES)/bsdiff \
 	    $(HOST_OUT_EXECUTABLES)/care_map_generator \
+	    $(MAKE_RECOVERY_PATCH) \
 	    $(BUILD_IMAGE_SRCS) \
 	    $(BUILT_ASSEMBLED_FRAMEWORK_MANIFEST) \
 	    $(BUILT_ASSEMBLED_VENDOR_MANIFEST) \
@@ -4179,7 +4177,7 @@
 ifneq ($(INSTALLED_RECOVERYIMAGE_TARGET),)
 ifdef BUILDING_SYSTEM_IMAGE
 	$(hide) PATH=$(INTERNAL_USERIMAGES_BINARY_PATHS):$$PATH MKBOOTIMG=$(MKBOOTIMG) \
-	    build/make/tools/releasetools/make_recovery_patch $(zip_root) $(zip_root)
+	    $(MAKE_RECOVERY_PATCH) $(zip_root) $(zip_root)
 endif # BUILDING_SYSTEM_IMAGE
 endif
 ifeq ($(AB_OTA_UPDATER),true)