While fixing NTP for powerpc64le, I noticed an additional bug in config.h.
* powerpc time_t is 64 bit, not 32 bit.
* Add definition for powerpc64le.
Todo:
- Test ntp on ppc32 (currently building a fresh worldTested on powerpc64 (POWER9 Talos II), powerpc64le (POWER9 Blackbird), will test shortly.and powerpc (G4 PowerBook)