formfactor: assume a keyboard is plugged in
A sensible assumption is that BSPs have a USB keyboard and mouse connected
unless told otherwise, so flip the logic in the formfactor config script that
previously assumed that a keyboard was not connected by default.
[ YOCTO #9174 ]
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>