Defines starting with `i' in src/dsp

• ICR_HF0 src/dsp/dsp.c:910
• ICR_HF1 src/dsp/dsp.c:909
• ICR_HM0 src/dsp/dsp.c:908
• ICR_HM1 src/dsp/dsp.c:907
• ICR_INIT src/dsp/dsp.c:906
• ICR_RREQ src/dsp/dsp.c:912
• ICR_TREQ src/dsp/dsp.c:911
• IO_SEG_MASK src/dsp/dsp.c:902
• ISR_DMA src/dsp/dsp.c:918
• ISR_HF2 src/dsp/dsp.c:920
• ISR_HF3 src/dsp/dsp.c:919
• ISR_HREQ src/dsp/dsp.c:917
• ISR_RXDF src/dsp/dsp.c:923
• ISR_TRDY src/dsp/dsp.c:921
• ISR_TXDE src/dsp/dsp.c:922