Change permission of getPreferredNetworkType

This change the permission of getPreferredNetworkType to
READ_PRIVILEGED_PHONE_STATE.

Bug:111453000
Test: build
Change-Id: I1b12096b4d0093467699ed925fea077e6351fd5e
(cherry picked from commit a4009cb6b18bd6e43c1aac7699d85781d7473679)
1 file changed