[mlir] Fix build break with shared libraries

When project components are built as separate shared libraries, a lot
of errors appear about undefined symbols, e.g.

```
/usr/bin/ld: CMakeFiles/obj.MLIRGPUPipelines.dir/GPUToNVVMPipeline.cpp.o
: in function `(anonymous namespace)::buildCommonPassPipeline(mlir::OpPa
ssManager&, (anonymous namespace)::GPUToNVVMPipelineOptions const&)':
GPUToNVVMPipeline.cpp:(.text._ZN12_GLOBAL__N_123buildCommonPassPipelineE
RN4mlir13OpPassManagerERKNS_24GPUToNVVMPipelineOptionsE+0xa5): undefined
 reference to `mlir::createConvertLinalgToLoopsPass()'
```

Add the necessary dependencies to Dialect/GPU/Pipelines/CMakeLists.txt