soc/intel/{cnl,icl,skl}: Move ipu.asl into common/block/acpi

This patch creates a common instance of ipu.asl inside intel common
code (soc/intel/common/block/acpi/acpi) and ask cnl & icl soc code to
refer ipu.asl from common code block.

TEST=Able to build and boot Hatch and ICL DE system. Dump DSDT.asl to verify
Device(IMGU) presence after booting to OS.

Change-Id: I4d18571008c199fd5c3dbeed8cba9374520359b4
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36459
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/intel/cannonlake/acpi/ipu.asl

@@ -1,23 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2017 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-/* IPU3 input system - Device 05, Function 0 */
-Device (IMGU)
-{
-	Name (_ADR, 0x00050000)
-	Name (_DDN, "Imaging Unit")
-	Name (_CCA, ZERO)
-	Name (CAMD, 0x01)
-}

src/soc/intel/skylake/acpi/ipu.asl

@@ -13,13 +13,7 @@
  * GNU General Public License for more details.
  */
 
-/* IPU3 input system - Device 05, Function 0 */
-Device (IMGU)
-{
-	Name (_ADR, 0x00050000)
-	Name (_DDN, "Imaging Unit")
-	Name (CAMD, 0x01)
-}
+#include <soc/intel/common/block/acpi/acpi/ipu.asl>
 
 /* IPU3 processing system - Device 14, Function 3 */
 Device (CIO2)