yosys: shuffle seed

If CI falls over because of shuffled seeds, then this merits closer
study of whether the config.mk parameters are too tight or CI
baseline is too strict.

Signed-off-by: Øyvind Harboe <[email protected]>

Author: oharboe

flow/Makefile

@@ -236,7 +236,8 @@ ifeq (,$(strip $(NUM_CORES)))
 endif
 export NUM_CORES
 
-YOSYS_FLAGS += -v 3
+# Shuffle the Yosys seed occasionally to check for too-tight CI baseline checks.
+YOSYS_FLAGS += -v 3 --hash-seed=1234
 
 #-------------------------------------------------------------------------------
 # setup all commands used within this flow