Merge "Update FEATURE_VULKAN_HARDWARE_COMPUTE documentation" into oc-mr1-dev

     * Feature for {@link #getSystemAvailableFeatures} and

     * {@link #hasSystemFeature(String, int)}: If this feature is supported, the Vulkan native API

     * will enumerate at least one {@code VkPhysicalDevice}, and the feature version will indicate

     * what level of optional compute features are supported beyond the Vulkan 1.0 requirements.

     * what level of optional compute features that device supports beyond the Vulkan 1.0

     * requirements.

     * <p>

     * Compute level 0 indicates support for the {@code VariablePointers} SPIR-V capability defined

     * by the SPV_KHR_variable_pointers extension.

     * Compute level 0 indicates:

     * <ul>

     * <li>The {@code VK_KHR_variable_pointers} extension and

     *     {@code VkPhysicalDeviceVariablePointerFeaturesKHR::variablePointers} feature are

           supported.</li>

     * <li>{@code VkPhysicalDeviceLimits::maxPerStageDescriptorStorageBuffers} is at least 16.</li>

     * </ul>

     */

    @SdkConstant(SdkConstantType.FEATURE)

    public static final String FEATURE_VULKAN_HARDWARE_COMPUTE = "android.hardware.vulkan.compute";