Merge pull request #4936 from martin-frbg/fixmips64generic

Fix unroll parameter selection for MIPS64_GENERIC

Author: martin-frbg

param.h

@@ -2969,7 +2969,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define GEMM_DEFAULT_OFFSET_B  0
 #define GEMM_DEFAULT_ALIGN (BLASLONG) 0x03fffUL
 
-#if defined(NO_MSA)
+#if defined(NO_MSA) || defined(MIPS64_GENERIC)
 #define SGEMM_DEFAULT_UNROLL_M  2
 #define SGEMM_DEFAULT_UNROLL_N  2