Do not complain about unexpected lsdump files when building with

prebuilt APEXes.

Cherry-picked from https://r.android.com/1748082.

Test: m droid SOONG_CONFIG_art_module_source_build=false
Bug: 172480615
Change-Id: Ic75e769dce1ec3440407fe8e88973ae7ed25b651
Merged-In: Ic75e769dce1ec3440407fe8e88973ae7ed25b651