cc2520: clean up CC2520DriverLayerP.   Mostly cosmetic.
mm5s/cc2520: switch TRadio over to T32khz from TMicro
cc2520: rework where CSN is asserted.   Assert first, then release
mm5s/cc2520: move CC2520SpiConfigC to P
mm5s/cc2520_v2: created v2 from original cc2520
mm5s/cc2520_v2: put together simple configuration for 2520 spi
mm5s/cc2520-v2: fix directory name
msp430/x5: clarify a comment about module reset.
msp430/pins: add conditional atomics for pins (MSP430_PINS_ATOMIC_LOWLEVEL)
mm5s: turn on ATOMIC_LOWLEVEL for mm5s.  FORCE_ATOMIC