modem_diagnostics: add rules for getting battery info

Original change: https://android-review.googlesource.com/c/device/google/crosshatch-sepolicy/+/1881171

Bug: 204961005

Merged-In: Ibef0b67303fa9653b2e8bc8afca3ce2bd02dce98
Change-Id: Ibef0b67303fa9653b2e8bc8afca3ce2bd02dce98
(cherry picked from commit e69f6f34d1c098b713d9542ba78329daee4ce9c8)
1 file changed