precision for one hot plugin is wrong

[wugoukanle]

for one hot，tensorflow result and trt result is not match，trt reslut is all 0

[wugoukanle]

it waste my many time to check error location，and finaly it's found that -arch=sm_75 is not fit for my device in Makefile, that is to say, -arch=sm_70 is correct for v100.

[buptqq]

this is our oversight. We will add the config of 'sm_xx' in Makefile. thank you for your feedback