[TOPI] Fix atlest1d for reduce and squeeze

[tqchen]

No description provided.

[sergei-mironov]

In my opinion, adding atleast1d is correct, but I don't see reasons for making its default values different in different object files. It takes time to understand that TOPI_OUTPUT_ATLEAST1D is defined above headers in two places with different values.

I would suggest to make atleast1d parameters with fixed default value of 0 to represent numpy-like behavior, but pass 1 to every call made from NNVM to keep backward compatibility.
Alternatively, one may define atleast1d without default value and let compiler point us all the places it should be set.

[tqchen]

Thanks, @grwlf for the suggest, I agree you are right and have changed the code accordingly

[alexeyr]

If atleast1d was exposed as an optional parameter in Python too (both in TVM and NNVM), it would simplify #2105.