Rename TYPE_SP to TYPE_SP_GATEKEEPER

To clearly distinguish between Gatekeeper and Weaver based FRP
credentials, rename TYPE_SP to TYPE_SP_GATEKEEPER, and rename
synchronizeFrpPassword to synchronizeGatekeeperFrpPassword().

Change-Id: Ifefcbccd4bb69927223567a2d816d8c4b6b52770
4 files changed