pcengines/apu1: Supply _HID object for ACPI GPIO devices

The _HID was present for the top level BTNS and LEDS Devices, but
was missing in the individual devices.

The alternative would be to supply the GPIO being used as an _ADR
object, but since it looks like the driver already has another
method of handling that, it isn't required.

Fixes these IASL warnings:
dsdt.aml   1522:   Device (BTN1)
Warning  3141 -              ^ Missing dependency
(Device object requires a _HID or _ADR in same scope)
dsdt.aml   1567:   Device (LED1)
Warning  3141 -              ^ Missing dependency
(Device object requires a _HID or _ADR in same scope)
dsdt.aml   1576:   Device (LED2)
Warning  3141 -              ^ Missing dependency
(Device object requires a _HID or _ADR in same scope)
dsdt.aml   1587:   Device (LED3)
Warning  3141 -              ^ Missing dependency
(Device object requires a _HID or _ADR in same scope)

Change-Id: I67c48084a6ee2a104ffff2b5a986d24a51ee49e1
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12582
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/pcengines/apu1/Kconfig b/src/mainboard/pcengines/apu1/Kconfig
index 0754596..2328776 100644
--- a/src/mainboard/pcengines/apu1/Kconfig
+++ b/src/mainboard/pcengines/apu1/Kconfig
@@ -110,8 +110,4 @@
 
 endchoice
 
-# TODO: Remove this when platform ASL is fixed
-config IASL_WARNINGS_ARE_ERRORS
-	def_bool n
-
 endif # BOARD_PCENGINES_APU1
diff --git a/src/mainboard/pcengines/apu1/acpi/buttons.asl b/src/mainboard/pcengines/apu1/acpi/buttons.asl
index 17b2d9a..a2120a9 100644
--- a/src/mainboard/pcengines/apu1/acpi/buttons.asl
+++ b/src/mainboard/pcengines/apu1/acpi/buttons.asl
@@ -37,6 +37,7 @@
 
 		Device (BTN1)
 		{
+			Name (_HID, "PRP0001")
 			Name (_DSD, Package () {
 				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
 				Package () {
diff --git a/src/mainboard/pcengines/apu1/acpi/leds.asl b/src/mainboard/pcengines/apu1/acpi/leds.asl
index 91b4d20..1e447f1 100644
--- a/src/mainboard/pcengines/apu1/acpi/leds.asl
+++ b/src/mainboard/pcengines/apu1/acpi/leds.asl
@@ -35,6 +35,7 @@
 
 		Device (LED1)
 		{
+			Name (_HID, "PRP0001")
 			Name (_DSD, Package () {
 				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
 				Package () {
@@ -51,6 +52,7 @@
 
 		Device (LED2)
 		{
+			Name (_HID, "PRP0001")
 			Name (_DSD, Package () {
 				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
 				Package () {
@@ -63,6 +65,7 @@
 
 		Device (LED3)
 		{
+			Name (_HID, "PRP0001")
 			Name (_DSD, Package () {
 				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
 				Package () {