cpu: Indirect predictor track conditional indirect (#1077)

As discussed in https://github.com/orgs/gem5/discussions/954: 

In the refactor made by commit f65df9b959 conditional indirect
branches are no longer updated in the indirect predictor.
This kind of branches do not exist in x86 neither arm, but they are
present in PowerPC.

This patch, enables the indirect predictor to track this kind of
branches.

src/cpu/pred/simple_indirect.hh

@@ -160,7 +160,8 @@ class SimpleIndirectPredictor : public IndirectPredictor
 
     inline bool isIndirectNoReturn(BranchType type) {
         return (type == BranchType::CallIndirect) ||
-               (type == BranchType::IndirectUncond);
+               (type == BranchType::IndirectUncond) ||
+               (type == BranchType::IndirectCond);
     }
 
   protected: