Corrected paths concerning micaz/LocalIeeeEui64C

Moved platforms/micaz/LocalIeeeEui64C.nc to platforms/micaz/eui64 so
that the iris platform will not use it instead of the ds24x1 version of
LocalIeeeEui64.

Also fixed compile bug with mica2/chips/ds2401/HplDs24x1C.nc.