kernel: don't use a special toolchain

Change-Id: Id4784348fd16bf7ff90222c6f1cfcf68755a65f6
ril: implement a new motoOmap4 RIL which unsupports CB/CellInfo

As the motorola RIL does not handle CellBroadcast and CellInfo-calls
well, unsupport them in this board specific RIL.

Change-Id: Id6ae75f4e416c19ea50476d8bacd69958a49f83f