mb/pcengines: Enable SuperIO LDN 0xf for GPIO soft reset

LDN 0xf keeps registers with open-drain configuration of the GPIO.
Enabling the LDN is required for proper GPIO soft reset operation
by the SuperIO driver.

Signed-off-by: Piotr Kleinschmidt <piotr.kleinschmidt@3mdeb.com>
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: Ia769e3d8e66015297942bddf328a6fde0bb27ce6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38274
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb b/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb
index 0c0c21e..ad29965 100644
--- a/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb
+++ b/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb
@@ -65,12 +65,12 @@
 						irq 0x70 = 3
 					end
 					device pnp 2e.8 off end
-					device pnp 2e.f off end
 					# GPIO0 and GPIO1 are conditionally turned on
 					device pnp 2e.007 on end
 					device pnp 2e.107 on end
 					device pnp 2e.607 off end
 					device pnp 2e.e off end
+					device pnp 2e.f on end
 				end # SIO NCT5104D
 			end # LPC 0x439d