Makefile: Add ifwitool to list of tools to be built

Add ifwitool to list of tools to be built so that it can be used by the
build system.

Change-Id: Ifcfbfd87ad9b7ba3ea11cfbcf40894f3e0dae694
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15013
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed