Add Falcon support (new) (#592)

vllm/transformers_utils/configs/__init__.py

@@ -1,7 +1,12 @@
 from vllm.transformers_utils.configs.mpt import MPTConfig
 from vllm.transformers_utils.configs.baichuan import BaiChuanConfig
+# RWConfig is for the original tiiuae/falcon-40b(-instruct) and
+# tiiuae/falcon-7b(-instruct) models. Newer Falcon models will use the
+# `FalconConfig` class from the official HuggingFace transformers library.
+from vllm.transformers_utils.configs.falcon import RWConfig
 
 __all__ = [
     "MPTConfig",
     "BaiChuanConfig",
+    "RWConfig",
 ]