package/zstd: build multithreaded host-zstd

Under the assumption that all Buildroot build hosts nowadays are
multithreaded, we can boost performance of host-zstd by enabling
multithreaded operation.

See also commit 52154e52069d20105f62191e6c9f903f188a5129.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
1 file changed