Add TODO comment to divmod

Author: antonwolfy

mkl_umath/generate_umath.py

@@ -719,7 +719,7 @@ def english_upper(s):
 # 'arctan2':
 # 'remainder': Intel(R) MKL function v?Remainder follows C's modulo operator,
 #              but NumPy is expecting Python's one
-# 'divmod':
+# 'divmod': TODO: check if it can be added
 # 'hypot':
 'isnan':
     Ufunc(1, 1, None,