mb/google/ocelot: Fix fast_vmode_i_trip indexing in devicetree

This aligns with the corrected indexing scheme used in the SoC VR
configuration code.

Ref=:830097_WCL_PDG_SchChk_Rev1p5
BUG=b:None
TEST=Build ocelot and verify that the system boots

Change-Id: I948c9233f4a5518992891b90fb9bb6a3793baa5f
Signed-off-by: Sowmya Aralguppe <sowmya.aralguppe@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91449
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Pranava Y N <pranavayn@google.com>

src/mainboard/google/ocelot/variants/baseboard/ocelot/devicetree.cb

@@ -73,7 +73,7 @@ chip soc/intel/pantherlake
 	# TODO: Update with actual i_trip values.
 	register "enable_fast_vmode[VR_DOMAIN_GT]" = "true"
 	register "cep_enable[VR_DOMAIN_GT]" = "true"
-	register "fast_vmode_i_trip[WCL_CORE]" = "{
+	register "fast_vmode_i_trip[WCL_SKU_1]" = "{
 		[VR_DOMAIN_GT] = 25 * 4,
 	}"