soc/intel/common/acpi: Add stub for GNA scoring accelerator

Allows boards which enable the GNA device to provide an attachment
point for the OS drivers.

TEST=tested with rest of patch train

Change-Id: I3398eefb80e4407594883dd39128cd7885105ac3
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Signed-off-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77528
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

src/soc/intel/common/block/acpi/acpi/gna.asl

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* GNA Scoring Accelerator - Device 08, Function 0 */
+Device (GNA)
+{
+	Name (_ADR, 0x00080000)
+	Name (_DDN, "GNA Scoring Accelerator")
+}