modem_diagnostics: add rules for getting battery info

Original change: https://android-review.googlesource.com/c/device/google/redbull-sepolicy/+/1881159

Bug: 204961005

Merged-In: I1fc134913db3c9248811a42ee1f37928f440c156
Change-Id: I1fc134913db3c9248811a42ee1f37928f440c156
(cherry picked from commit ae4b7183afd2b7cda3d6bfde7122a1d536e09426)
1 file changed