Add slave node to RoCC #831

Job	Run time
riscv-arch-test	0s
riscv-tests (DefaultConfig)	19m 48s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultC...	22m 5s
riscv-tests (DefaultBufferlessConfig)	19m 38s
emulator (DefaultSmallConfig)	13m 3s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultR...	20m 5s
riscv-tests (DefaultRV32Config)	19m 45s
emulator (DualBankConfig)	13m 23s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	18m 15s
riscv-tests (TinyConfig)	13m 36s
emulator (DualChannelConfig)	13m 47s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	17m 30s
riscv-tests (DefaultFP16Config)	14m 16s
emulator (DualChannelDualBankConfig)	13m 46s
emulator (RoccExampleConfig)	13m 23s
emulator (Edge128BitConfig)	13m 22s
emulator (Edge32BitConfig)	13m 26s
emulator (QuadChannelBenchmarkConfig)	13m 31s
emulator (EightChannelConfig)	13m 49s
emulator (DualCoreConfig)	13m 49s
emulator (MemPortOnlyConfig)	12m 59s
emulator (MMIOPortOnlyConfig)	12m 41s
emulator (CloneTileConfig)	15m 30s
emulator (HypervisorConfig)	13m 4s
	5h 54m 31s

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