[AArch64 1/3 big.LITTLE] Driver rewriting of big.LITTLE names.
gcc/
* common/config/aarch64/aarch64-common.c
(aarch64_rewrite_selected_cpu): New.
(aarch64_rewrite_mcpu): New.
* config/aarch64/aarch64-protos.h
(aarch64_rewrite_selected_cpu): New.
* config/aarch64/aarch64.h (BIG_LITTLE_SPEC): New.
(BIG_LITTLE_SPEC_FUNCTIONS): Likewise.
(ASM_CPU_SPEC): Likewise.
(EXTRA_SPEC_FUNCTIONS): Likewise.
(EXTRA_SPECS): Likewise.
(ASM_SPEC): Likewise.
* config/aarch64/aarch64.c (aarch64_start_file): Rewrite target
CPU name.
From-SVN: r206098