gcc/
	* config/nds32/nds32.c (nds32_cpu_cpp_builtins): Modify to define
	__NDS32_VH__ macro.
	* config/nds32/nds32.opt (mvh): New option.

Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>

From-SVN: r258427