fix Android studio compilation error
fix Android studio compilation error

Summary: Android studio auto -Werrors in debug mode and throws an error on non string literals in 3rd argument of android_log_print

Reviewed By: Yangqing

Differential Revision: D4465263

fbshipit-source-id: af6dc436b7c98a29aa89bb241c452e6da5c8ad1f

Yangqing/caffe2,bwasti/caffe2,sf-wind/caffe2,davinwang/caffe2,sf-wind/caffe2,pietern/caffe2,Yangqing/caffe2,pietern/caffe2,sf-wind/caffe2,davinwang/caffe2,caffe2/caffe2,pietern/caffe2,bwasti/caffe2,bwasti/caffe2,bwasti/caffe2,Yangqing/caffe2,xzturn/caffe2,xzturn/caffe2,bwasti/caffe2,pietern/caffe2,davinwang/caffe2,davinwang/caffe2,davinwang/caffe2,pietern/caffe2,xzturn/caffe2,sf-wind/caffe2,Yangqing/caffe2,xzturn/caffe2,sf-wind/caffe2,Yangqing/caffe2,xzturn/caffe2