util: Fixed gem5img.py script (#990)

Made the script more robust to different names.

Co-authored-by: Hossam ElAtali <hossam.elatali@uwaterloo.ca>

util/gem5img.py

@@ -194,7 +194,8 @@ def findPartOffset(devFile, fileName, partition):
         r"\s*:\s*"  # Separator
         r"start=\s*(?P<start>\d+),\s*"  # Partition start record
         r"size=\s*(?P<size>\d+),\s*"  # Partition size record
-        r"type=(?P<type>\d+)"  # Partition type record
+        r"type=(?P<type>.+?),*?"  # Partition type record
+        r".*"  # anything else, e.g., name field
         r"\s*$"  # End of line
     )
     lines = out.splitlines()