mb/asrock/h110m: set I/O Range for SuperIO HWM

Change-Id: I30de4f40f8ca87c54faee84053c4bb0f874b2884
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35369
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/asrock/h110m/devicetree.cb

@@ -33,6 +33,9 @@ chip soc/intel/skylake
 	register "gpe0_dw1" = "GPP_D"
 	register "gpe0_dw2" = "GPP_E"
 
+	# Set @0x280-0x2ff I/O Range for SuperIO HWM
+	register "gen1_dec" = "0x007c0281"
+
 	# Enable "Intel Speed Shift Technology"
 	register "speed_shift_enable" = "1"