import triton files when triton is supported and installed (#6989)

Those files have code that gets run when importing them, so in systems
that doesn't support triton but have triton installed this causes
issues.

In general, I think it is better to import triton when it is installed
and supported.

Signed-off-by: Omar Elayan <oelayan@habana.ai>

deepspeed/model_implementations/transformers/ds_transformer.py

@@ -14,7 +14,7 @@
 from deepspeed.ops.transformer.inference.op_binding.workspace import WorkspaceOp
 from deepspeed.accelerator import get_accelerator
 import deepspeed
-if deepspeed.HAS_TRITON:
+if deepspeed.HAS_TRITON and get_accelerator().is_triton_supported():
     from deepspeed.ops.transformer.inference.triton.mlp import TritonMLP
     from deepspeed.ops.transformer.inference.triton.attention import TritonSelfAttention