Input: olpc_apsp - fix dependencies of OLPC AP-SP driver

I don't think the OLPC AP-SP driver is generally useful without OLPC
support. So make it depend on OLPC, unless build testing is enabled.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>