wvstreams: fix QA warning

* fixes
  wvstreams-4.6.1: wvstreams: Files/directories were installed but not shipped
  /usr/lib/valgrind
  /usr/lib/valgrind/wvstreams.supp

* the valgrind support is disabled in EXTRA_OECONF, so just move unpackaged file to package

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>