Address API feedbacks for networktypebitmask

1. change networktypebitmask from int to long
2. right shift definition by 1 for each bitmask, in consistent with
NW bitmask used in APN settings
3. add missing definition for IWLAN

Bug: 119118373
Test: atest CtsTelephonyTestCases:TelephonyManagerTest#testGetRadioAccessFamily
Change-Id: Idf0f88225c20fc0ed10ae4fccb705f988a3bec60