Default grants for "Nearby devices" permission.

The location stack can interact with nearby devices to better resolve
the device's location, so grant access by default.

The companion device app needs to interact with nearby devices as
part of configuring them.

Bug: 181813006
Test: atest CtsPermission2TestCases
Test: atest CtsPermission3TestCases
Test: atest CtsStatsdAtomHostTestCases
Change-Id: Ib0d740b1e5928a55ca7a1e454ed19d3b96b52444