Add DATA_WIRE_RC_LAYER, CLOCK_WIRE_RC_LAYER to config

sky130/openlane/config.tcl

diff --git a/sky130/openlane/config.tcl b/sky130/openlane/config.tcl
index d61d1bb..310a82b 100755
--- a/sky130/openlane/config.tcl
+++ b/sky130/openlane/config.tcl
@@ -160,5 +160,7 @@
 set ::env(FP_PDN_CORE_RING_VOFFSET) 6
 set ::env(FP_PDN_CORE_RING_HOFFSET) 6
 
-# Used for estimate_parasitics
-set ::env(WIRE_RC_LAYER) "met1";
+# Used for parasitics estimation, IR drop analysis, etc
+set ::env(WIRE_RC_LAYER) "met1"
+set ::env(DATA_WIRE_RC_LAYER) "met2"
+set ::env(CLOCK_WIRE_RC_LAYER) "met5"
\ No newline at end of file