Clean up all deprecations from chisel3p6 to embrace chisel5 #525

Job	Run time
riscv-tests (DefaultConfig)	22m 5s
riscv-tests (DefaultBufferlessConfig)	22m 19s
riscv-tests (DefaultRV32Config)	22m 18s
riscv-tests (TinyConfig)	22m 20s
riscv-tests (DefaultFP16Config)	22m 2s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultC...	22m 34s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultR...	22m 33s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	22m 17s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	22m 34s
emulator (DefaultSmallConfig)	22m 35s
emulator (DualBankConfig)	22m 34s
emulator (DualChannelConfig)	22m 33s
emulator (DualChannelDualBankConfig)	22m 34s
emulator (RoccExampleConfig)	22m 34s
emulator (Edge128BitConfig)	22m 34s
emulator (Edge32BitConfig)	22m 34s
emulator (QuadChannelBenchmarkConfig)	22m 34s
emulator (EightChannelConfig)	22m 17s
emulator (DualCoreConfig)	22m 34s
emulator (MemPortOnlyConfig)	22m 34s
emulator (MMIOPortOnlyConfig)	22m 34s
emulator (CloneTileConfig)	22m 36s
emulator (HypervisorConfig)	22m 34s
riscv-arch-test (DefaultRV32Config,32,RV32IMACZicsr_Zifencei)	1s
riscv-arch-test (DefaultConfig,64,RV64IMACZicsr_Zifencei)	1s
riscv-arch-test (BitManipCryptoConfig,64,RV64IZba_Zbb_Zbc_Zbkb_Zbkc_Zbkx_Zbs_Zknd_Zkne_Zknh_Zksed...	1s
riscv-arch-test (BitManipCrypto32Config,32,RV32IZba_Zbb_Zbc_Zbkb_Zbkc_Zbkx_Zbs_Zknd_Zkne_Zknh_Zks...	1s
	8h 36m 47s

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