PSO per-stage compilation - part 2

Change-Id: Id4bff6f2ce901550c973a81ca0f4434f7b442c76

Author: fftzeng

IGC/common/Types.hpp

@@ -46,14 +46,17 @@ class ShaderHash
         : asmHash(0)
         , nosHash(0)
         , psoHash(0)
+        , perStagePsoHash(0)
     {}
     QWORD getAsmHash() const { return asmHash; }
     QWORD getNosHash() const { return nosHash; }
     QWORD getPsoHash() const { return psoHash; }
+    QWORD getPerStagePsoHash() const { return perStagePsoHash; }
 
     QWORD asmHash;
     QWORD nosHash;
     QWORD psoHash;
+    QWORD perStagePsoHash;
 };
 
 enum class SIMDMode : unsigned char