New: Connect a scfifo to collect exceptions from processing/memfy, avoid #240

Job	Run time
Synthesis	1m 6s
Lint	16s
Privilege-Security-Testsuite	5m 13s
SV-Testsuite	3m 34s
C-Testsuite	15m 45s
WBA-Testsuite	4m 49s
RISCV-Compliance	27m 34s
	58m 17s

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