Added DRC rule to the drc(full) deck for sky130 to capture the

rule for HVNTM spacing across a PTAP region.  This needs to be
checked because the PTAP prevents the HVNTM from being merged
across the intervening space.

VERSION

@@ -1 +1 @@
-1.0.466
+1.0.467

sky130/magic/sky130.tech

@@ -4454,6 +4454,17 @@ variants (fast),(full)
 	~(pfetlvt,nfetlvt,pdiodelvt,ndiodelvt)/a allfetsnolvt 415 \
 	"Min. spacing between FET and LVTN in S/D direction < %d (lvtn.3b)"
 
+#--------------------------------------------------------------------
+# HVNTM 
+#--------------------------------------------------------------------
+
+variants (full)
+ # This requires extra spacing of hvndiff if a ptap is in between
+ cifwidth hvntm_generate 700 "Width of HVNTM < %d (hvntm.1)"
+ cifspacing hvntm_generate hvntm_generate 700 touching_ok \
+	"HVNTM spacing < %d (hvntm.2)"
+variants *
+
 #--------------------------------------------------------------------
 # NPC (Nitride poly Cut)
 #--------------------------------------------------------------------