radix tree test suite: Remove types.h

commit 12ea65390bd5a46f8a70f068eb0d48922576a781 upstream.

Move the pieces we still need to tools/include and update a few implicit
includes.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
[ Just take the tools/include/linux/* portions of this patch - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>