Added env var to set target.lst

Change-Id: Ie6aefba6ef79360e65d4a64a6be1ec50e59b5741

rocm_agent_enumerator

@@ -55,9 +55,11 @@ def getGCNISA(line, match_from_beginning = False):
 def readFromTargetLstFile():
   target_list = []
 
-  # locate target.lst which should be placed at the same directory with this
-  # script
-  target_lst_path = os.path.join(CWD, "target.lst")
+  # locate target.lst using environment variable or
+  # it should be placed at the same directory with this script
+  target_lst_path = os.environ.get("ROCM_TARGET_LST");
+  if target_lst_path == None:
+    target_lst_path = os.path.join(CWD, "target.lst")
   if os.path.isfile(target_lst_path):
     target_lst_file = open(target_lst_path, 'r')
     for line in target_lst_file: