Add missing function declarations.

Author: breyerml

include/hardware_sampling/gpu_amd/hardware_sampler.hpp

@@ -117,6 +117,16 @@ class gpu_amd_hardware_sampler : public hardware_sampler {
      */
     void sampling_loop() final;
 
+    /**
+     * @copydoc hws::hardware_sampler::device_identification
+     */
+    std::string device_identification() const final;
+
+    /**
+     * @copydoc hws::hardware_sampler::generate_yaml_string
+     */
+    std::string generate_yaml_string() const final;
+
     /// The ID of the device to sample.
     std::uint32_t device_id_{};