Add uid/package check in WifiServiceImpl#flushPasspointAnqpCache

Enforce UID to package name check to validate that the caller isn't
providing a fake packageName which isn't their own.

Bug: 191276693
Test: atest WifiServiceImplTest WifiManagerTest
Change-Id: Ia4c1870b3a360653b1a86ac9d8f81206a88f02c9
1 file changed