always print status info on vlc finding (even when not found)

Summary:
this is arguably more valuable information when LIBVLC_FOUND is falsy
as it aids diagnostics, so only printing it when vlc was actually found
is rather pointless. to not change behavior to much we'll now print status
in both scenarios instead.

Test Plan: prints all the time

Reviewers: bshah

Reviewed By: bshah

Differential Revision: https://phabricator.kde.org/D17473