ACPICA: Update for _PRP predefined name.

Allow objects of type "reference" in the second subpackage element.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/acpredef.h

@@ -704,7 +704,7 @@ const union acpi_predefined_info acpi_gbl_predefined_methods[] = {
 	  METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}},	/* Variable-length (Pkgs) each: 1 Str, 1 Int/Str/Pkg */
 	PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_STRING, 1,
 		     ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING |
-		     ACPI_RTYPE_PACKAGE, 1, 0),
+		     ACPI_RTYPE_PACKAGE | ACPI_RTYPE_REFERENCE, 1, 0),
 
 	{{"_PRS", METHOD_0ARGS,
 	  METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},