[NDS32] Implment n10 pipeline.
gcc/
* config.gcc (nds32*-*-*): Check that n10/d10 are valid to --with-cpu.
* config/nds32/nds32-n10.md: New file.
* config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N10.
* config/nds32/nds32-pipelines-auxiliary.c: Implementation for n10
pipeline.
* config/nds32/nds32-protos.h: More declarations for n10 pipeline.
* config/nds32/nds32-utils.c: More implementations for n10 pipeline.
* config/nds32/nds32.md (pipeline_model): Add n10.
* config/nds32/nds32.opt (mcpu): Support n10 pipeline cpus.
* config/nds32/pipelines.md: Include n10 settings.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@260207 138bc75d-0d04-0410-961f-82ee72b054a4