mb/*: drop LPC generic range for port 80

Port 80 (actually 0x80-0x8f) is a fixed I/O range and thus does not have
to be set up as generic range. Drop the entries from the devicetrees.

Change-Id: I8a54d3c35a321a2d57bd846662f7339eff53e5a8
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52237
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/mainboard/razer/blade_stealth_kbl/devicetree.cb b/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
index a358fb8..a4951fe 100644
--- a/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
+++ b/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
@@ -15,9 +15,8 @@
 	register "gpe0_dw1" = "GPP_D"
 	register "gpe0_dw2" = "GPP_E"
 
-	register "gen1_dec" = "0x000c0081"
-	register "gen2_dec" = "0x000c0681"
-	register "gen3_dec" = "0x000c1641"
+	register "gen1_dec" = "0x000c0681"
+	register "gen2_dec" = "0x000c1641"
 
 	# Disable DPTF
 	register "dptf_enable" = "0"