Modified I/O references to match the sky130_fd_io release.  Mostly
confirmed, but waiting on fixes to the library release.
diff --git a/verilog/rtl/user_id_programming.v b/verilog/rtl/user_id_programming.v
index 4e80555..30f5eb8 100644
--- a/verilog/rtl/user_id_programming.v
+++ b/verilog/rtl/user_id_programming.v
@@ -16,10 +16,10 @@
 
     sky130_fd_sc_hd__conb_1 mask_rev_value [31:0] (
         `ifdef LVS
-            .vpwr(vdd1v8),
-            .vpb(vdd1v8),
-            .vnb(vss),
-            .vgnd(vss),
+            .VPWR(vdd1v8),
+            .VPB(vdd1v8),
+            .VNB(vss),
+            .VGND(vss),
         `endif
             .HI(user_proj_id_high),
             .LO(user_proj_id_low)