soc/intel/{IA-CPU/SOC}: Move sleepstates.asl into southbridge/intel/common/acpi

This patch creates a common instance of sleepstates.asl inside intel common
code (southbridge/intel/common/acpi) and asks all IA CPU/SOC code to
refer sleepstates.asl from common code block.

TEST=Able to build and boot Hatch and ICL DE system. Dump DSDT.asl to verify
S0/S3/S4/S5 entries after booting to OS.

Change-Id: Ie2132189f91211df74f8b5546da63ded4fdf687a
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36463
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/getac/p470/dsdt.asl

@@ -55,5 +55,5 @@ DefinitionBlock(
 	}
 
 	/* Chipset specific sleep states */
-	#include <southbridge/intel/i82801gx/acpi/sleepstates.asl>
+	#include <southbridge/intel/common/acpi/sleepstates.asl>
 }