soc/amd/cezanne/acpi/soc.asl: Add platform.asl

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I01adba010bfad1bb4fdf20a8d0ab22aeeebeb10a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50891
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/soc/amd/cezanne/acpi/soc.asl

@@ -10,3 +10,14 @@ Scope(\_SB) {
 
 	#include "mmio.asl"
 } /* End \_SB scope */
+
+#include <soc/amd/common/acpi/platform.asl>
+
+/*
+ * Platform Wake Notify
+ *
+ * This is called by soc/amd/common/acpi/platform.asl.
+ */
+Method (PNOT)
+{
+}