Fix packaging of libvlc_vdpau.so since this plugin
does not have soname version
Fixes
QA Issue: non -dev/-dbg/nativesdk- package contains symlink .so: vlc path '/work/cortexa7hf-neon-vfpv4-oe-linux-gnueabi/vlc/2.2.2-r0/packages-split/vlc/usr/lib/vlc/libvlc_vdpau.so' [dev-so]
Signed-off-by: Khem Raj <raj.khem@gmail.com>