Hide signal strength when told by carrier

Bug: 69730732
Test: Add different values for two carriers in vendor.xml
and see them change when swapping sim card
Depends-On: I155c8f619a451edab85cf6422cef73e8e1686629
Change-Id: I241ddb3c20002db781308d94c6c165b8d13b2474
1 file changed