Fix typo in Makefile

This strangely breaks with gmake on FreeBSD, but seems to work with make
on Linux.

Thanks Idwer Vollering <vidwer@gmail.com> for noticing and testing.

Corresponding to flashrom svn r593.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
1 file changed