device-tree-compiler ftbfs with Python 3.12 as default

[Sergio Durigan Junior]

This is the Ubuntu counterpart of https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1061318.

When building the package using Python 3.12:

[...]

testCreate (__main__.PyLibfdtSwTests.testCreate) ... FAIL

======================================================================
FAIL: testReserveMap (__main__.PyLibfdtBasicTests.testReserveMap)
Test that we can access the memory reserve map
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/<<PKGBUILDDIR>>/tests/./pylibfdt_tests.py", line 421, in
testReserveMap
    self.assertEqual([ 0xdeadbeef00000000, 0x100000],
AssertionError: Lists differ: [16045690981097406464, 1048576] != [0,
16045690981097406464, 1048576]

First differing element 0:
16045690981097406464
0

Second list contains 1 additional elements.
First extra element 2:
1048576

- [16045690981097406464, 1048576]
+ [0, 16045690981097406464, 1048576]
? +++

======================================================================
FAIL: testCreate (__main__.PyLibfdtSwTests.testCreate)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/<<PKGBUILDDIR>>/tests/./pylibfdt_tests.py", line 585, in
testCreate
    self.assertEqual([TEST_ADDR_1, TEST_SIZE_1], fdt.get_mem_rsv(0))
AssertionError: Lists differ: [9223372036854775808, 1048576] != [0,
9223372036854775808, 1048576]

First differing element 0:
9223372036854775808
0

Second list contains 1 additional elements.
First extra element 2:
1048576

- [9223372036854775808, 1048576]
+ [0, 9223372036854775808, 1048576]
? +++

----------------------------------------------------------------------
Ran 39 tests in 0.005s

FAILED (failures=2)
********** TEST SUMMARY
* Total testcases: 2100
* PASS: 2098
* FAIL: 0
* Bad configuration: 0
* Strange test result: 0
**********
make[1]: *** [tests/Makefile.tests:89: check] Error 1
make[1]: Leaving directory '/<<PKGBUILDDIR>>'