FEAT: PEFT support for EETQ (#30449)

Update quantizer_eetq.py

src/transformers/quantizers/quantizer_eetq.py

@@ -167,4 +167,4 @@ class EetqHfQuantizer(HfQuantizer):
 
     @property
     def is_trainable(self) -> bool:
-        return False
+        return True