rf2500t: move CCACLK CC0 to accessible pin.
rf2500t: move CCACLK CC0 to accessible pin.

TB0 CCI0A is on P4.0 which is not brought out to the header; use CCI0B on
P4.3 instead.

pabigot/bsp430,pabigot/bsp430,pabigot/bsp430,pabigot/bsp430