scons,python: Add python2-config to PYTHON_CONFIG

PYTHON_CONFIG can be python2-config as well as python2.7-config.

Change-Id: I482cb922fcf26b37f67f2aca392e04968ca144bd
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35255
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed