[mlir][py-bindings] Fix include issue introduced by D127352

Using:
      -DMLIR_ENABLE_BINDINGS_PYTHON=ON

Resulted in a failed build due to changes implemented by
https://reviews.llvm.org/D127352

This updates the include line

Reviewed By: Mogball

Differential Revision: https://reviews.llvm.org/D127523

mlir/python/mlir/dialects/GPUOps.td

@@ -10,6 +10,6 @@
 #define PYTHON_BINDINGS_GPU_OPS
 
 include "mlir/Bindings/Python/Attributes.td"
-include "mlir/Dialect/GPU/GPUOps.td"
+include "mlir/Dialect/GPU/IR/GPUOps.td"
 
 #endif