Update build script for cross compiling Android on Windows host

Make install per submodule fails for some reason on Windows host.
Use temporary solution to do top level make install when cross compiling
on Windows host.

Change-Id: I7c0f2ed9789516be7fa2c4db424ffa48e332022d
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>