[MIGraphX EP] Add support for Mod OP (#14647)
This has been available since July 25th 2022 in MIGraphX. Appared to be
missing from support list of ops
https://github.com/ROCmSoftwarePlatform/AMDMIGraphX/pull/1302
### Description
<!-- Describe your changes. -->
Add in node name for Mod Operator to be supported by MIGraphX
### 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. -->
Expand available functionality to Onnxruntime for the MIGraphX EP
Co-authored-by: Ted Themistokleous <tthemist@amd.com>
