Solve naming conflict with Yosys #1019

Job	Run time
riscv-tests (DefaultConfig)	22m 33s
riscv-arch-test	0s
riscv-tests (DefaultBufferlessConfig)	22m 44s
emulator (DefaultSmallConfig)	15m 53s
riscv-tests (DefaultRV32Config)	23m 21s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultC...	24m 54s
emulator (DualBankConfig)	15m 52s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultR...	22m 59s
riscv-tests (TinyConfig)	16m 31s
emulator (DualChannelConfig)	16m 27s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	21m 31s
riscv-tests (DefaultFP16Config)	17m 3s
emulator (DualChannelDualBankConfig)	16m 39s
emulator (RoccExampleConfig)	16m 7s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	20m 30s
emulator (Edge128BitConfig)	16m 11s
emulator (Edge32BitConfig)	16m 6s
emulator (QuadChannelBenchmarkConfig)	16m 34s
emulator (EightChannelConfig)	16m 35s
emulator (DualCoreConfig)	16m 26s
emulator (MemPortOnlyConfig)	16m 6s
emulator (MMIOPortOnlyConfig)	17m 44s
emulator (CloneTileConfig)	17m 28s
emulator (HypervisorConfig)	16m 3s
	7h 2m 17s

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