-Renumber RIL requests to match the message IDs for NATT Keepalive messages. -Update comments to indicate RIL+HAL and HAL-only messages. -Add new message offsets to explicitly support HAL-only messages in the list. Bug: 110181475 Test: runtest frameworks-telephony Change-Id: I58544f9291f426b5c195ece81113e15ed423d2df