Get rid of the hardcoded configure call preventing cross-compilation

Upstream-Status: Pending
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>

--- a/utils/Makefile
+++ b/utils/Makefile
@@ -29,7 +29,6 @@ FILTER_OUT_DIRS		:= $(FFSBDIR)
 FFSB			:= $(FFSBDIR)/ffsb
 
 $(FFSB): $(FFSBDIR)
-	cd $^; ./configure
 	$(MAKE) -C $^ -f "$(abs_srcdir)/$^/Makefile" all
 	cp $(FFSBDIR)/ffsb ffsb