Fix dependency on Soong jacoco report classes

The dependency on the Soong jacoco report classes was mistakenly
using $(common_javalib.jar) which was never set, so was using
the value from the last module.  Use $(LOCAL_BUILT_MODULE)
instead.

Test: m checkbuild
Change-Id: If502d67f9e5e0c107de44e96cbf232406c027e44