Corrected the sky130_ef_io.v verilog library to replace references
to the deprecated cell sky130_fd_io__top_power_hvc_wpad with the
replacement sky130_fd_io__top_power_hvc_wpadv2.

sky130/custom/sky130_fd_io/verilog/sky130_ef_io.v

diff --git a/sky130/custom/sky130_fd_io/verilog/sky130_ef_io.v b/sky130/custom/sky130_fd_io/verilog/sky130_ef_io.v
index afb2880..66a0f74 100644
--- a/sky130/custom/sky130_fd_io/verilog/sky130_ef_io.v
+++ b/sky130/custom/sky130_fd_io/verilog/sky130_ef_io.v
@@ -30,7 +30,7 @@
   inout VSSIO;
 
   // Instantiate the underlying power pad (connects P_PAD to VCCD)
-  sky130_fd_io__top_power_hvc_wpad sky130_fd_io__top_power_hvc_base ( 
+  sky130_fd_io__top_power_hvc_wpadv2 sky130_fd_io__top_power_hvc_base ( 
 	.VSSA(VSSA),
 	.VDDA(VDDA),
 	.VSWITCH(VSWITCH),
@@ -170,7 +170,7 @@
   inout VSSIO;
 
   // Instantiate the underlying power pad (connects P_PAD to VDDA)
-  sky130_fd_io__top_power_hvc_wpad sky130_fd_io__top_power_hvc_base ( 
+  sky130_fd_io__top_power_hvc_wpadv2 sky130_fd_io__top_power_hvc_base ( 
 	.VSSA(VSSA),
 	.VDDA(VDDA),
 	.VSWITCH(VSWITCH),
@@ -263,7 +263,7 @@
   inout VSSIO;
 
   // Instantiate the underlying power pad (connects P_PAD and VDDIO_Q to VDDIO)
-  sky130_fd_io__top_power_hvc_wpad sky130_fd_io__top_power_hvc_base ( 
+  sky130_fd_io__top_power_hvc_wpadv2 sky130_fd_io__top_power_hvc_base ( 
 	.VSSA(VSSA),
 	.VDDA(VDDA),
 	.VSWITCH(VSWITCH),