pySim/utils.py: Attempt to support pycryptodpme

This should resolve the following error when using with pycryptodome
instead of pycrypto:

TypeError: new() missing 1 required positional argument: 'mode'

Change-Id: Ibd3ca00d62b864909f5e89e0feb350268157a4ca
Related: OS#5060
diff --git a/pySim/utils.py b/pySim/utils.py
index 13e62f0..f7190d4 100644
--- a/pySim/utils.py
+++ b/pySim/utils.py
@@ -246,7 +246,7 @@
 	# We pass in hex string and now need to work on bytes
 	ki_bytes = bytes(h2b(ki_hex))
 	op_bytes = bytes(h2b(op_hex))
-	aes = AES.new(ki_bytes)
+	aes = AES.new(ki_bytes, AES.MODE_ECB)
 	opc_bytes = aes.encrypt(op_bytes)
 	return b2h(strxor(opc_bytes, op_bytes))