skl mainboards/dt: Move genx_dec settings into LPC device scope

Change-Id: Iecb4851bedb7c9ed7793763d80acbcbb068e8832
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83172
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Jonathon Hall <jonathon.hall@puri.sm>
Reviewed-by: Erik van den Bogaert <ebogaert@eltan.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Marvin Evers <marvin.n.evers@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb b/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb
index 035811f..97f995d 100644
--- a/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb
+++ b/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb
@@ -8,9 +8,6 @@
 	register "gpe0_dw1" = "GPP_D"
 	register "gpe0_dw2" = "GPP_E"
 
-	register "gen1_dec" = "0x007c0a01"	# Super IO SWC
-	register "gen2_dec" = "0x000c0ca1"	# IPMI KCS
-
 	# FIXME: find out why FSP crashes without this
 	register "PchHdaVcType" = "Vc1"
 
@@ -67,6 +64,9 @@
 			smbios_slot_desc "SlotTypeM2Socket3" "SlotLengthOther" "M.2 2280" "SlotDataBusWidth4X"
 		end
 		device ref lpc_espi on
+			register "gen1_dec" = "0x007c0a01"	# Super IO SWC
+			register "gen2_dec" = "0x000c0ca1"	# IPMI KCS
+
 			chip drivers/ipmi
 				use pch_gpio as gpio_dev
 				register "post_complete_gpio" = "GPP_B20"