Enable full error message for mobile builds (#29926)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29926
add a macro to enable full error message for mobile
Test Plan: buck build -c project.ignore= //xplat/experimental/pytorch/predictor:predictorAndroid#android-armv7
Reviewed By: dreiss
Differential Revision: D18521937
fbshipit-source-id: 99673b60a03da249236dc916bab3dff88d24bc25
