Revert "Revert "[ARM] Add Kryo to available targets""

This reverts commit dc9458d5a747a02a9a8f198b84c2b92a6939a8dd.

Added missing case for PreISelOperandLatencyAdjustment.

llvm-svn: 299724
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 46c3857..40993fc 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -64,6 +64,7 @@
     CortexR7,
     ExynosM1,
     Krait,
+    Kryo,
     Swift
   };
   enum ARMProcClassEnum {