[ipgen] Move SPI_HOST to ipgen #3507

Job	Run time
Lint (quick)	3m 28s
Airgapped build	11m 23s
Build documentation	4m 54s
CW305's Bitstream	2m 2s
Run OTBN crypto tests	19m 28s
Run OTBN smoke Test	2m 41s
Lint (slow)	12m 10s
Verible lint	1m 3s
Verilated Earl Grey	3m 53s
Verilated English Breakfast	35s
Build Docker Containers	2m 33s
Build and test software	18m 46s
Earl Grey for CW310 Hyperdebug / Build bitstream	3m 7s
Earl Grey for CW310 / Build bitstream	3m 3s
Earl Grey for CW340 / Build bitstream	2m 49s
CW310 Manufacturing Tests	0s
CW310 SiVal Tests	0s
CW310 SiVal ROM_EXT Tests	0s
CW310 ROM_EXT Tests	0s
CW310 ROM Tests	0s
CW310 Test ROM Tests	0s
Cache bitstreams to GCP	0s
CW340 ROM Tests	0s
CW340 ROM_EXT Tests	0s
CW340 SiVal Tests	0s
CW340 Test ROM Tests	0s
CW340 Manufacturing Tests	0s
CW340 SiVal ROM_EXT Tests	0s
Verify FPGA jobs	20s
	1h 32m 15s

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