Enable api-versions.xml generation for api-stubs

Test: m -j
out/target/common/obj/PACKAGING/api-stubs-docs_generated-api-versions.xml
Bug: b/78245848

Change-Id: I2800f49e264473f5ec78e074cfd844c72342522f
Merged-In: I2800f49e264473f5ec78e074cfd844c72342522f
1 file changed