modem_diagnostics: add rules for getting battery info am: 25bf6fd541 am: 4fc4c4de6f am: 6c9138618b am: f99f94d402

Original change: https://android-review.googlesource.com/c/device/google/bonito-sepolicy/+/1880670

Change-Id: I660c54fcfe80fdafce5a6a1a6c61de4af02dbf22

vendor/google/modem_diagnostics.te

diff --git a/vendor/google/modem_diagnostics.te b/vendor/google/modem_diagnostics.te
index d506496..1805ac1 100644
--- a/vendor/google/modem_diagnostics.te
+++ b/vendor/google/modem_diagnostics.te
@@ -20,4 +20,7 @@
 
   set_prop(modem_diagnostic_app, vendor_modem_diag_prop)
   set_prop(modem_diagnostic_app, radio_control_prop)
+
+  allow modem_diagnostic_app sysfs_batteryinfo:file r_file_perms;
+  allow modem_diagnostic_app sysfs_batteryinfo:dir search;
 ')