Fix Makefile dependencies if FT2232SPI is not selected

.features was always regenerated in that case, triggering whole-project
recompiles even if nothing changed.

Corresponding to flashrom svn r844.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Sean Nelson <audiohacked@gmail.com>
1 file changed