mip: Optimize _CHUNK_SIZE const for code size.

17 bytes reduced.

Signed-off-by: Jos Verlinde <Jos_Verlinde@hotmail.com>

Author: Josverl

micropython/mip/manifest.py

@@ -1,4 +1,4 @@
-metadata(version="0.4.1", description="On-device package installer for network-capable boards")
+metadata(version="0.4.2", description="On-device package installer for network-capable boards")
 
 require("requests")
 

micropython/mip/mip/__init__.py

@@ -1,13 +1,14 @@
 # MicroPython package installer
 # MIT license; Copyright (c) 2022 Jim Mussared
 
-from micropython import const
-import requests
 import sys
 
+import requests
+
+from micropython import const
 
 _PACKAGE_INDEX = const("https://micropython.org/pi/v2")
-_CHUNK_SIZE = 128
+_CHUNK_SIZE = const(128)
 
 allowed_mip_url_prefixes = ("http://", "https://", "github:", "gitlab:")