testsuite: T7815 requires SMP support from ghc
testsuite: T7815 requires SMP support from ghc

Signed-off-by: Sergei Trofimovich <110fdadc76b6bce16977f568bdb4723eaed6fb3f@gentoo.org>
(cherry picked from commit ff9f4ad38521e54c5284f9bf4599c3baaefeb228)

hferreiro/replay,hferreiro/replay,hferreiro/replay,hferreiro/replay,hferreiro/replay,hferreiro/replay,hferreiro/replay