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>

src/mainboard/intel/adlrvp/devicetree_m.cb

@@ -34,7 +34,6 @@ chip soc/intel/alderlake
 	register "gen2_dec" = "0x000c0201"
 	# EC memory map range is 0x900-0x9ff
 	register "gen3_dec" = "0x00fc0901"
-	register "gen4_dec" = "0x000c0081"
 
 	register "PrmrrSize" = "0"