busybox: add 'ip tunnel' support

fixes #2189
libva: Bump libva and libva-intel-driver
xbmc: Add VPP deinterlacing for intel vaapi
mesa: fix rc6 hang on snb
Revert "projects/*/linux: disable rc6 to avoid crashes on all projects using intel GPU drivers"

This reverts commit c6ea2a2882526c2da273cbffefedb5de0ceedc0c not needed anymore