Move the minor mn10300-specific logic to a dedicated file & namespace
them so we can merge its configure logic up a level. part_specific_obj
wasn't used anywhere (looks like copy & paste left over from mips), so
drop it entirely.
* syscall.h: Added SYS_times, SYS_gettimeofday, SYS_link values.
* mn10300/times.c: Renamed "times" to "_times" so that it can be
referenced by newlib.
* mn10300/cygmon.c: New file.
* mn10300/crt0_redboot.S: Ditto.
* mn10300/crt0_cygmon.S: Ditto.
* mn10300/Makefile.in: Added RedBoot and Cygmon support.
* mn10300/configure.in: Changed to allow for future
evaluation boards to be added.
* mn10300/configure: Regenerated.