Add missing EFIAPI declarations instead of adding build flag -mabi=ms

[sunnywang-arm]

-mabi=ms is added for fixing the issue related to calling conventions for an upcoming release.

However, the solution/fix preferred by edk2 community is to add a missing EFIAPI. This is why we don't see "-mabi=ms" being used in other places in tianocore open source code. Therefore, create this issue to follow up.

For details, please see https://github.com/tianocore/edk2-t st/pull/281#issuecomment-3184055697

[sunnywang-arm]

@edhay could you assign the issue to @r1chard-lyu? I can't modify any fields of this issue.

[edhay]

Thank you Sunny for raising the issue.
/assign @r1chard-lyu
Only the collaborators of the repo can be assigned with issues.

[edhay]

@r1chard-lyu : Can you try to assign this issue to yourself.

[r1chard-lyu]

@edhay
It seems I don’t have permission to assign this issue to myself. Does it require being a collaborator to do so?