Include strings.h for the defintion of ffs()

ffs() is defined in strings.h. gcc had no problem with this as it
automatically used it's own builtin for ffs().

Change-Id: I7062f6143d680b2ae73f69b6b4b1e0be94a3e28b
Author: Edwin Vane <edwin.vane@intel.com>
Reviewed-by: Kevin Schoedel <kevin.p.schoedel@intel.com>
1 file changed