vec perm can go down either pipeline on P8.

No observable changes, spotted while looking at the scheduling description.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296277 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCScheduleP8.td

@@ -377,7 +377,7 @@ def P8Itineraries : ProcessorItineraries<
                                    InstrStage<1, [P8_FPU1, P8_FPU2]>],
                                   [7, 1, 1]>,
   InstrItinData<IIC_VecPerm     , [InstrStage<1, [P8_DU1, P8_DU2], 0>,
-                                   InstrStage<1, [P8_FPU2, P8_FPU2]>],
+                                   InstrStage<1, [P8_FPU1, P8_FPU2]>],
                                   [3, 1, 1]>
 ]>;