Add DEBUG_LOG macro

Add DEBUG_LOG that will optionally print error
message when RSMI_DEBUG_BITFIELD is set to 2.

Signed-off-by: Divya Shikre <DivyaUday.Shikre@amd.com>
Change-Id: I6017e92d8a9e5f9861ae29ece0488d4bc198f996

src/rocm_smi_main.cc

@@ -376,6 +376,10 @@ void RocmSMI::GetEnvVariables(void) {
 #endif
 }
 
+const RocmSMI_env_vars& RocmSMI::getEnv(void) {
+  return env_vars_;
+}
+
 std::shared_ptr<Monitor>
 RocmSMI::FindMonitor(std::string monitor_path) {
   std::string tmp;