Link real IMM_ROM_EXT into ROM_EXT #3572

Job	Run time
Lint (quick)	3m 53s
Lint (slow)	14m 45s
Build documentation	5m 30s
Airgapped build	10m 13s
CW305's Bitstream	21m 10s
Run OTBN crypto tests	20m 11s
Verible lint	2m 9s
Run OTBN smoke Test	2m 33s
Verilated Earl Grey	1h 19m 17s
Verilated English Breakfast	8m 13s
Build Docker Containers	2m 51s
Build and test software	3m 13s
Earl Grey for CW310 / Build bitstream	1h 7m 5s
Earl Grey for CW310 Hyperdebug / Build bitstream	1h 11m 25s
Earl Grey for CW340 / Build bitstream	1h 29m 52s
CW310 ROM Tests / FPGA test	39m 45s
CW310 Test ROM Tests / FPGA test	1m 38s
CW310 ROM_EXT Tests / FPGA test	5m 56s
CW310 SiVal ROM_EXT Tests / FPGA test	1h 0m 15s
CW310 Manufacturing Tests / FPGA test	48m 16s
CW310 SiVal Tests / FPGA test	24m 31s
Cache bitstreams to GCP	0s
CW340 ROM Tests / FPGA test	45s
CW340 ROM_EXT Tests / FPGA test	2m 4s
CW340 Manufacturing Tests / FPGA test	24m 56s
CW340 SiVal Tests / FPGA test	17m 2s
CW340 Test ROM Tests / FPGA test	3m 14s
CW340 SiVal ROM_EXT Tests / FPGA test	12m 38s
Verify FPGA jobs	29s
	10h 43m 49s

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