Since commit 1745fcde74,
python-subprocess32 fails to build because it runs configure with
incorrect arguments so add a PYTHON_SUBPROCESS32_CONFIGURE_CMDS
Fixes:
- http://autobuild.buildroot.org/results/dcf944129392ee6cacc106e096d8d3adfa4447bb
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>