modem_diagnostics: add rules for getting battery info

Original change: https://android-review.googlesource.com/c/device/google/coral-sepolicy/+/1879629

Bug: 204961005

Merged-In: Ib9e0c1c1997d4cb4e5d15144f7a0076407286d09
Change-Id: Ib9e0c1c1997d4cb4e5d15144f7a0076407286d09
(cherry picked from commit bf7b34d672581aa159d27109f936308fea0efb42)
1 file changed