Switch the Power minimumALS to use OMRProcessorArchitecture

For future use, the Power codegen's instruction properties table
contains a field called minimumALS that describes the first processor
architecture which introduced a given instruction. Previously, this used
the TR_Processor enum, which has since been deprecated in favour of
using the OMRProcessorArchitecture enum from the port library. To keep
this field consistent, it has also been changed to use
OMRProcessorArchitecture.

Signed-off-by: Benjamin Thomas <ben@benthomas.ca>

compiler/p/codegen/OMRInstOpCode.hpp

@@ -37,6 +37,7 @@ namespace OMR { typedef OMR::Power::InstOpCode InstOpCodeConnector; }
 
 #include "codegen/PPCOpsDefines.hpp"
 #include "env/Processors.hpp"
+#include "omrport.h"
 
 namespace OMR
 {
@@ -88,7 +89,7 @@ class InstOpCode: public OMR::InstOpCode
       /** \brief
        *     The minimum architecture level set (ALS) which introduced this instruction.
        */
-      TR_Processor minimumALS;
+      OMRProcessorArchitecture minimumALS;
 
       /** \brief
        *     The properties describing the behavior of this instruction to the codegen.