BaseTools: replace get_bytes_le() to bytes_le

UUID does not have the get_bytes_le() in python3

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

BaseTools/Source/Python/Common/Misc.py

@@ -1180,7 +1180,7 @@ def ParseFieldValue (Value):
         if Value[0] == '"' and Value[-1] == '"':
             Value = Value[1:-1]
         try:
-            Value = "'" + uuid.UUID(Value).get_bytes_le() + "'"
+            Value = "'" + uuid.UUID(Value).bytes_le + "'"
         except ValueError as Message:
             raise BadExpression(Message)
         Value, Size = ParseFieldValue(Value)