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/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
index 122fb15..5d31208 100644
--- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
@@ -27,12 +27,6 @@
 	register "gpe0_dw1" = "GPP_D"
 	register "gpe0_dw2" = "GPP_E"
 
-	# EC host command ranges are in 0x800-0x8ff & 0x200-0x20f
-	register "gen1_dec" = "0x00fc0801"
-	register "gen2_dec" = "0x000c0201"
-	# EC memory map range is 0x900-0x9ff
-	register "gen3_dec" = "0x00fc0901"
-
 	# Enable DPTF
 	register "dptf_enable" = "1"
 
@@ -410,6 +404,12 @@
 		device ref sdio 		off end
 		device ref sdxc 		on  end
 		device ref lpc_espi 		on
+			# EC host command ranges are in 0x800-0x8ff & 0x200-0x20f
+			register "gen1_dec" = "0x00fc0801"
+			register "gen2_dec" = "0x000c0201"
+			# EC memory map range is 0x900-0x9ff
+			register "gen3_dec" = "0x00fc0901"
+
 			chip ec/google/chromeec
 				device pnp 0c09.0 on end
 			end