[MIGraphX EP ] Add support for QLinearAveragePool and QLinearGlobalAveragePool (microsoft#26162)

### Description
<!-- Describe your changes. -->
Add support for MIgraphX EP operators QLinearGlobalAveragePool and
QLinaerAveragePool ops


### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
Want support for these operators through MIGraphX EP and MIGraphX

Author: TedThemistokleous

onnxruntime/core/providers/migraphx/migraphx_execution_provider.cc

@@ -953,6 +953,8 @@ GetUnsupportedNodeIndices(const GraphViewer& graph_viewer,
                                                     "QLinearAdd",
                                                     "QLinearConv",
                                                     "QLinearMatMul",
+                                                    "QLinearAveragePool",
+                                                    "QLinearGlobalAveragePool",
                                                     "QuantizeLinear",
                                                     "QuickGelu",
                                                     "DynamicQuantizeLinear",