add onnx support for deberta and debertav2 (#17617)

* add onnx support for debertav2

* debertav2 -> deberta-v2 in onnx features file

* remove causal lm

* add deberta-v2-xlarge to onnx tests

* use self.type().dtype() in xsoftmax

Co-authored-by: Jingya HUANG <44135271+JingyaHuang@users.noreply.github.com>

* remove hack for deberta

* remove unused imports

* Update src/transformers/models/deberta_v2/configuration_deberta_v2.py

Co-authored-by: Jingya HUANG <44135271+JingyaHuang@users.noreply.github.com>

* use generate dummy inputs

* linter

* add imports

* add support for deberta v1 as well

* deberta does not support multiple choice

* Update src/transformers/models/deberta/configuration_deberta.py

Co-authored-by: Jingya HUANG <44135271+JingyaHuang@users.noreply.github.com>

* Update src/transformers/models/deberta_v2/configuration_deberta_v2.py

Co-authored-by: Jingya HUANG <44135271+JingyaHuang@users.noreply.github.com>

* one line ordered dict

* fire build

Co-authored-by: Jingya HUANG <44135271+JingyaHuang@users.noreply.github.com>

tests/onnx/test_onnx_v2.py

@@ -180,6 +180,8 @@ PYTORCH_EXPORT_MODELS = {
     ("ibert", "kssteven/ibert-roberta-base"),
     ("camembert", "camembert-base"),
     ("convbert", "YituTech/conv-bert-base"),
+    ("deberta", "microsoft/deberta-base"),
+    ("deberta-v2", "microsoft/deberta-v2-xlarge"),
     ("convnext", "facebook/convnext-tiny-224"),
     ("distilbert", "distilbert-base-cased"),
     ("electra", "google/electra-base-generator"),