Use correct regex to avoid SyntaxWarning: invalid escape sequence '\.'

Change-Id: I1c6179be294bf21c0897a3abf7e8ab1d270ae238
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>


[ROCm/amdsmi commit: d9ccc44146]

projects/amdsmi/amdsmi_cli/BDF.py

@@ -123,7 +123,7 @@ class BDF():
         """Overrided the 'in' comparator in python"""
         passed_bdf = str(BDF(passed_bdf))
 
-        bdf_regex = "(?:[0-6]?[0-9a-fA-F]{1,4}:)?[0-2]?[0-9a-fA-F]{1,2}:[0-9a-fA-F]{1,2}\.[0-7]"
+        bdf_regex = "(?:[0-6]?[0-9a-fA-F]{1,4}:)?[0-2]?[0-9a-fA-F]{1,2}:[0-9a-fA-F]{1,2}\\.[0-7]"
         for match in re.findall(bdf_regex, passed_bdf):
             if self == match:
                 return True