lowlevel-blt-bench: print single pattern details

When given just a single test pattern instead of "all", print the test
details. This can be used to verify the pattern parser agrees with the
user, just like scaling settings are printed.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Ben Avison <bavison@riscosopen.org>
1 file changed