Fix tile interrupt sources #937

Job	Run time
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultC...	21m 34s
riscv-arch-test	0s
riscv-tests (DefaultConfig)	19m 33s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.DefaultR...	20m 20s
emulator (DefaultSmallConfig)	13m 15s
riscv-tests (DefaultBufferlessConfig)	20m 20s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	18m 48s
emulator (DualBankConfig)	13m 31s
riscv-tests (DefaultRV32Config)	19m 49s
jtag-dtm-test (freechips.rocketchip.system.WithJtagDTMSystem_freechips.rocketchip.system.WithDebu...	17m 41s
emulator (DualChannelConfig)	13m 27s
riscv-tests (TinyConfig)	13m 33s
emulator (DualChannelDualBankConfig)	13m 37s
riscv-tests (DefaultFP16Config)	14m 13s
emulator (RoccExampleConfig)	13m 25s
emulator (Edge128BitConfig)	13m 24s
emulator (Edge32BitConfig)	14m 24s
emulator (QuadChannelBenchmarkConfig)	14m 32s
emulator (EightChannelConfig)	13m 44s
emulator (DualCoreConfig)	12m 53s
emulator (MemPortOnlyConfig)	12m 51s
emulator (MMIOPortOnlyConfig)	12m 56s
emulator (CloneTileConfig)	14m 27s
emulator (HypervisorConfig)	13m 12s
	5h 55m 29s

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