RISC-V: Extract multi-letter extension names from "riscv, isa"

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Currently, there is no usage for version numbers in extensions as
any ratified non base ISA extension will always at v1.0.

Extract the extension names in place for future parsing.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Tsukasa OI <research_trasio@irq.a4lg.com>
[Improved commit text and comments]
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Tsukasa OI 2022-03-14 13:38:42 -07:00 • committed by Palmer Dabbelt

parent 2a31c54be0

commit 40a4d0dfbc

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arch/riscv/kernel/cpufeature.c

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