biology/hhsuite: fix packaging on powerpc

pkg-static: Unable to access file /wrkdirs/usr/ports/biology/hhsuite/work/stage/usr/local/bin/hhalign_omp:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/biology/hhsuite/work/stage/usr/local/bin/hhblits_ca3m:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/biology/hhsuite/work/stage/usr/local/bin/hhblits_omp:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/biology/hhsuite/work/stage/usr/local/bin/hhsearch_omp:No such file or directory

powerpc doesn't have LLVM with libomp.