Add missing builder for PowOp.

PiperOrigin-RevId: 277625541
Change-Id: Ib663fb84954854084d6b75d3edaf7c1ec6220238
diff --git a/tensorflow/compiler/mlir/xla/ir/hlo_ops.cc b/tensorflow/compiler/mlir/xla/ir/hlo_ops.cc
index f9c7964..4c2bafb 100644
--- a/tensorflow/compiler/mlir/xla/ir/hlo_ops.cc
+++ b/tensorflow/compiler/mlir/xla/ir/hlo_ops.cc
@@ -781,6 +781,7 @@
 BINARY_BUILDER(AndOp);
 BINARY_BUILDER(OrOp);
 BINARY_BUILDER(RemOp);
+BINARY_BUILDER(PowOp);
 
 #undef BINARY_BUILDER