sysutils/fusefs-lkl: update to 4.16

Upstream removed git tags, so the version is based on Linux Makefile and
date of the git revision.

The upstream Makefile no longer accepts specific targets, so the non-FUSE
targets are patched away to prevent them from being built (which fails).
(They are not used by this port.)

Submitted by: Charlie Li <ml AT vishwin.info>
Reviewed by: mat
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D16044