soc/intel/common/acpi: rename dptf.asl to dptf_common.asl file

Rename dptf.asl to dptf_common.asl under soc/intel/common/acpi path
to avoid any kind of confusion with another dptf.asl file under
soc/intel/common/acpi/dptf path. Sometime it's confusing to have
two dptf.asl files just one directory apart.

BUG=None
BRANCH=None
TEST=Build and boot on volteer system

Change-Id: I23d93719e23c0b7659ccb23e5d0868f879bc162c
Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42417
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/soc/intel/common/acpi/dptf/dptf.asl

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 /* Include common dptf ASL files */
-#include <soc/intel/common/acpi/dptf.asl>
+#include <soc/intel/common/acpi/dptf_common.asl>
 
 Device (DPTF)
 {