Fixes leftovers from when this was a .so
Fixes leftovers from when this was a .so

libunwind should be included as a static library, not a dynamic one

Change-Id: I9f7f3e9e410e645baeca68021c727c7197c78077

xin3liang/platform_external_libcxxrt,sudosurootdev/external_libcxxrt,xin3liang/platform_external_libcxxrt,xin3liang/platform_external_libcxxrt,sudosurootdev/external_libcxxrt,sudosurootdev/external_libcxxrt