lttng-tools: fix version bumping to 2.1.1"

* re-introduce lttng-tools-no-sync-file-range-in-uclibc.patch
  (merged upstream just after the 2.1.1 release)

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>