cpu-o3: Adjust MicroTAGE numWays parameter

Change-Id: Ifb85845ae323d6214e858c54193894ef30152509

Author: Cao Jiaming

src/cpu/pred/BranchPredictor.py

@@ -1079,7 +1079,7 @@ class MicroTAGE(TimedBaseBTBPredictor):
     histLengths = VectorParam.Unsigned([5, 29, 57, 107] ,"the BTB TAGE T0~Tn history length")
     maxHistLen = Param.Unsigned(970,"The length of history passed from DBP")
     numTablesToAlloc = Param.Unsigned(1,"The number of table to allocated each time")
-    numWays = Param.Unsigned(2, "Number of ways per set")
+    numWays = Param.Unsigned(1, "Number of ways per set")
     maxBranchPositions = Param.Unsigned(32,"Maximum branch positions per 64-byte block")
     useAltOnNaSize = Param.Unsigned(128,"Size of the useAltOnNa table")
     useAltOnNaWidth = Param.Unsigned(7,"Width of the useAltOnNa table")