Change MigraphX EP to amdgpu EP

[Zhaeong]

Description

This changes the naming of 'migraphx' EP to 'amdgpu'

Motivation and Context

For easier usability

[snnn]

/azp where

[karim-vad]

Hi,
Thank you for the PR. Recently Adrian and I refactored some of the Generic Interface handling in the ORT main branch which is currently being cherry-picked to release. #24552.

Once above changes are available in release branch, we should rebase this PR on top of the latest release which will simplify a lot of Generic interface changes.

In summary

• we have introduced separate macros for code that needs to be compiled as part of ORT interface i.e. e.g. DUSE_VITISAI_PROVIDER_INTERFACE.
• If code being compiled belongs to both the ORT interface as well as part of EP, then code block should be wrapped by preprocessor # if USE_VITISAI_PROVIDER_INTERFACE || USE_VITISAI.
• Please refer PR 24552 to see how changes were made.

[nieubank]

Hi, Thank you for the PR. Recently Adrian and I refactored some of the Generic Interface handling in the ORT main branch which is currently being cherry-picked to release. #24552.

Once above changes are available in release branch, we should rebase this PR on top of the latest release which will simplify a lot of Generic interface changes.

In summary

• we have introduced separate macros for code that needs to be compiled as part of ORT interface i.e. e.g. DUSE_VITISAI_PROVIDER_INTERFACE.
• If code being compiled belongs to both the ORT interface as well as part of EP, then code block should be wrapped by preprocessor # if USE_VITISAI_PROVIDER_INTERFACE || USE_VITISAI.
• Please refer PR 24552 to see how changes were made.

Can you retarget this to main?

[tianleiwu]

@TedThemistokleous, please take a look.

[TedThemistokleous]

@tianleiwu @Zhaeong

Why is this even being done? I thought AMD is maintaining the MIGraphX EP, furthermore changing the name after we're written documentation will cause confusion and issues. Its clear to a user if they want to leverage MIGraphX they'll be using the MIGraphX EP, which is the same MIGraphX that a customer gets who runs on a desktop, or a high end server.

cc @causten @ytaous