Support np.int16 in Python ABI.

PiperOrigin-RevId: 385649284

bindings/python/iree/runtime/function.py

diff --git a/bindings/python/iree/runtime/function.py b/bindings/python/iree/runtime/function.py
index 57537e7..36a5280 100644
--- a/bindings/python/iree/runtime/function.py
+++ b/bindings/python/iree/runtime/function.py
@@ -338,6 +338,7 @@
     "i32": np.int32,
     "i64": np.int64,
     "f64": np.float64,
+    "i16": np.int16,
     "i1": np.bool_,
 }