lib/oe/utils: use multiprocessing from bb

Fixes build with python-3.14

It was added to bitbake in 62be9113d98fccb347c6aa0a10d5c4ee2857f8b6
and oe-core now requires latest bitbake already, so we can use this.

[YOCTO #15858]

(From OE-Core rev: 8721554e02b4da4bb1aeb334921bc66a9eb80c91)

Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Reviewed-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/lib/oe/utils.py

@@ -5,10 +5,11 @@
 #
 
 import subprocess
-import multiprocessing
 import traceback
 import errno
 
+from bb import multiprocessing
+
 def read_file(filename):
     try:
         f = open( filename, "r" )