Don't implicitly depend on bionic from libunwind_llvm.

This isn't technically correct (libunwind_llvm depends on libc) but is
necessary to prevent soong from complaining about circular dependencies
when we start linking libunwind_llvm into libc.

Bug: 144430859
Change-Id: I221fd31626b9389c83553c79ab014bced516ff19
1 file changed