[SP20.2] Change permission to access network stats provider API

This is for the VtDataUsageProvider which lives in phone process
and provides data usage to NetworkStatsService. While the counter-
part (aosp/1242603) is changed to use the dedicated permission.
Change caller site accordingly in telephony part is needed.

Test: adb shell dumpsys netstats
Test: atest FrameworksTelephonyTests
Bug: 149652079

Change-Id: Id19a6640f2918366bff1e8c415205931dc146bec
Merged-In: Id19a6640f2918366bff1e8c415205931dc146bec
Merged-In: I981220fd22c9dd78dcdee1a13dd1a221a00444e8
(cherry picked from commit 26a657a5bd71f3c521a059255ae6c19fbe01f75b)
1 file changed