dt-bindings: altera: document Stratix 10 SWVP compatibles

Add compatible strings for Stratix 10 Software Virtual Platform

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Teh Wen Ping <wen.ping.teh@intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>