riscv: Enable idle generic idle loop

Enable generic idle loop to support for hlt/nohlt command line options
to override default idle loop behavior.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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Kefeng Wang 2021-07-08 09:59:48 +08:00 • committed by Palmer Dabbelt
commit bcf11b5e99
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