[VOLD] Add ARC++ ObbMount shared lib

Unfortunately, static library dependency is not transitive (even if the
dependency is a shared library). So I am wrapping the libarcobbvolume's
dependency as libarcmounter shared library.

Bug: 64500663
Test: Compile
Change-Id: I12be7a9d885c7c1c043185bd134e0148d420c6fd
1 file changed