exp5438_2520/2591: add support for _Build (build num) in target
exp5438_2520/2591: Change DEF_RFPOWER depending on presence of 2591
add Port7 to dumped h/w state
Msp430TimerP: update comment about h/w issues with Timer.overflow
exp5438_2520/2591: add BootParams
exp5438_2520/2591: modify PlatformCC2520P to use writePlatformRegisters