Merge pull request #2911 from jeffng-or/synth-name-change-fix

One last reference to CACHED_NETLIST

Author: maliberty

flow/scripts/synth_preamble.tcl

@@ -8,7 +8,7 @@ erase_non_stage_variables synth
 # floorplan step to be re-executed.
 if {[env_var_exists_and_non_empty SYNTH_NETLIST_FILES]} {
   if {[llength $::env(SYNTH_NETLIST_FILES)] == 1} {
-    log_cmd exec cp -p $::env(CACHED_NETLIST) $::env(RESULTS_DIR)/1_1_yosys.v
+    log_cmd exec cp -p $::env(SYNTH_NETLIST_FILES) $::env(RESULTS_DIR)/1_1_yosys.v
   } else {
     # The date should be the most recent date of the files, but to
     # keep things simple we just use the creation date