uninative: Update to 2.6 release

The 2.6 release contains both libcrypt.so.1 and libcrypt.so.2 which fixes
compatibility with recent fedora/suse releases.

The difference is one is built with obsolete APIs enabled and one disabled.
We now ship both in uninative for compatibility regardless of which distro
a binary is built on.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>