mb/asrock/b75pro3-m/devicetree.cb: Silence errors for PNP 2e.b

[ERROR]  PNP: 002e.b 62 io size: 0x0000000002 not assigned in devicetree
[ERROR]  PNP: 002e.b 70 irq size: 0x0000000001 not assigned in devicetree

Set them to zero.  This is also what the values are set to using vendor
firmware 1.90.

Signed-off-by: Fabian Groffen <grobian@gentoo.org>
Change-Id: Ide5980224f042e3da289aa28a18042ee8505d943
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73812
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/asrock/b75pro3-m/devicetree.cb b/src/mainboard/asrock/b75pro3-m/devicetree.cb
index 829aca8..6d7dddc 100644
--- a/src/mainboard/asrock/b75pro3-m/devicetree.cb
+++ b/src/mainboard/asrock/b75pro3-m/devicetree.cb
@@ -124,6 +124,8 @@
 					device pnp 2e.b on		# HWM, front panel LED
 						irq 0x30 = 0xe1		# + Fan RPM sense pins
 						io  0x60 = 0x0290	# + HWM base address
+						io  0x62 = 0x0000
+						irq 0x70 = 0
 					end
 					device pnp 2e.d on end		# VID
 					device pnp 2e.e off end		# CIR WAKE-UP