Add -openmp to ldflags as well
Add -openmp to ldflags as well

rwl/blis,arm-hpc/blis,arm-hpc/blis,scibuilder/blis,scibuilder/blis,arm-hpc/blis,xianyi/blis,rwl/blis,rwl/blis,rwl/blis,scibuilder/blis,xianyi/blis,xianyi/blis,scibuilder/blis,arm-hpc/blis,xianyi/blis