Dump BOARD_PARTIAL_OTA_UPDATE_PARTITIONS_LIST into misc_info.txt

Cuttlefish doesn't support updating the vendor partition. So we change
ota_from_target_files to only generate updates for partitions in
BOARD_PARTIAL_OTA_UPDATE_PARTITIONS_LIST. This CL puts the prop in
misc_info.txt, which will be read by ota scrips

Bug: 171999375
Test: mm -j
Change-Id: I4d9c97c717cb73806f95684b3bc81ef285ccbb8b
diff --git a/core/Makefile b/core/Makefile
index add62b4..bc6e969 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -4243,6 +4243,9 @@
 ifeq ($(BOARD_EXCLUDE_KERNEL_FROM_RECOVERY_IMAGE),true)
 	$(hide) echo "exclude_kernel_from_recovery_image=true" >> $@
 endif
+ifneq ($(BOARD_PARTIAL_OTA_UPDATE_PARTITIONS_LIST),)
+	$(hide) echo "partial_ota_update_partitions_list=$(BOARD_PARTIAL_OTA_UPDATE_PARTITIONS_LIST)" >> $@
+endif
 
 .PHONY: misc_info
 misc_info: $(INSTALLED_MISC_INFO_TARGET)