Add `priv` to Spike and fix smoke-tests #2013

Job	Run time
build-riscv-tests	18m 10s
execute-riscv-tests (asm-tests, cv64a6_imafdc_sv39)	23m 50s
execute-riscv-tests (asm-tests, cv64a6_imafdc_sv39_wb)	25m 13s
execute-riscv-tests (asm-tests, cv64a6_imafdc_sv39_hpdcache)	23m 58s
execute-riscv-tests (mul, cv64a6_imafdc_sv39)	6m 51s
execute-riscv-tests (mul, cv64a6_imafdc_sv39_wb)	7m 38s
execute-riscv-tests (mul, cv64a6_imafdc_sv39_hpdcache)	6m 53s
execute-riscv-tests (amo, cv64a6_imafdc_sv39)	9m 27s
execute-riscv-tests (amo, cv64a6_imafdc_sv39_wb)	12m 36s
execute-riscv-tests (amo, cv64a6_imafdc_sv39_hpdcache)	9m 49s
execute-riscv-tests (fp, cv64a6_imafdc_sv39)	10m 53s
execute-riscv-tests (fp, cv64a6_imafdc_sv39_wb)	12m 1s
execute-riscv-tests (fp, cv64a6_imafdc_sv39_hpdcache)	11m 6s
execute-riscv-tests (benchmarks, cv64a6_imafdc_sv39)	6m 40s
execute-riscv-tests (benchmarks, cv64a6_imafdc_sv39_wb)	10m 34s
execute-riscv-tests (benchmarks, cv64a6_imafdc_sv39_hpdcache)	6m 29s
	3h 22m 8s

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