[aes/pre_syn] Added missing keymgr_pkg file for Yosys synthesis

Signed-off-by: {Pascal Nasahl} <nasahl@google.com>
diff --git a/hw/ip/aes/pre_syn/syn_yosys.sh b/hw/ip/aes/pre_syn/syn_yosys.sh
index ed75e6e..e0a3d53 100755
--- a/hw/ip/aes/pre_syn/syn_yosys.sh
+++ b/hw/ip/aes/pre_syn/syn_yosys.sh
@@ -81,6 +81,7 @@
     "$LR_SYNTH_SRC_DIR"/../lc_ctrl/rtl/*_pkg.sv
     "$LR_SYNTH_SRC_DIR"/../tlul/rtl/*_pkg.sv
     "$LR_SYNTH_SRC_DIR"/../prim/rtl/*_pkg.sv
+    "$LR_SYNTH_SRC_DIR"/../keymgr/rtl/*_pkg.sv
 )
 
 # Convert OpenTitan dependency sources.