Enable operator to customize cell broadcast emergency message IDs.

Add support to CellBroadcastReceiver app to load the list of message IDs
to enable for emergency cell broadcast from system property
"ro.cellbroadcast.emergencyids", if present. Message IDs are defined as
decimal or hex integer ranges, e.g. a value of
"0x1100-0x1102,0xA001-0xA3FF" will enable message ID ranges
0x1100-0x1102 and 0xA001-0xA3FF at system boot.

Bug: 5516275
Change-Id: I75e7fc48c4aba2d7a191f298d27f78b1c193b9e7
1 file changed