Added "set ng_nomodcheck" to spinit, which is supposed to make
loading models somewhat faster.

sky130/custom/models/spinit

diff --git a/sky130/custom/models/spinit b/sky130/custom/models/spinit
index 4f4b2f1..e6a73aa 100644
--- a/sky130/custom/models/spinit
+++ b/sky130/custom/models/spinit
@@ -1,3 +1,5 @@
 * ngspice initialization for sky130
 * assert BSIM compatibility mode with "nf" vs. "W"
-set ngbehavior=spe
+set ngbehavior=hsa
+* "nomodcheck" speeds up loading time
+set ng_nomodcheck