[PATCH 03/09, nds32] Committed: Move builtin functions implementation to nds32-intrinsic.c module.

[Chung-Ju Wu]

Hi,

For supporting target specific builtin functions,
we use an individual nds32-intrinsic.c module to implement
essential and helpler functions.

Committed as Rev.212282.
  https://gcc.gnu.org/r212282


Best regards,
jasonwucj