Port rocm-smi function to amd-smi

Port most rocm-smi function to amd-smi and add unit tests.

Change-Id: I6387a4bdaf20ead2389c99bb01d438156ccd0747

amd_smi/include/impl/amd_smi_system.h

@@ -76,7 +76,7 @@ class AMDSmiSystem {
                     amdsmi_device_handle* device_handle);
 
  private:
-    AMDSmiSystem() : init_flag_(AMD_SMI_INIT_ALL_DEVICES) {}
+    AMDSmiSystem() : init_flag_(AMDSMI_INIT_ALL_DEVICES) {}
     uint64_t init_flag_;
     AMDSmiDrm drm_;
     std::vector<AMDSmiSocket*> sockets_;