Add compiler option -mmma for POWER10

Author: martin-frbg

Makefile.power

@@ -10,7 +10,7 @@ USE_OPENMP = 1
 endif
 
 ifeq ($(CORE), POWER10)
-COMMON_OPT += -Ofast -mcpu=power10 -mtune=power10 -mvsx  -fno-fast-math
+COMMON_OPT += -Ofast -mcpu=power10 -mtune=power10 -mvsx -mmma  -fno-fast-math
 FCOMMON_OPT += -O2 -frecursive -mcpu=power10 -mtune=power10  -fno-fast-math
 endif