schifra: fix install examples

Fixes:

http://autobuild.buildroot.net/results/1ec/1ec3664f28492bf3da53dcbe8ceeb165bce8df6d/build-end.log

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/schifra/schifra.mk

@@ -23,7 +23,7 @@ endef
 define SCHIFRA_INSTALL_EXAMPLES
 	cd $(@D) && for i in `find -type f -name 'schifra_*' -executable` ; \
 	do \
-		$(INSTALL) -m 0755 -D $$i (TARGET_DIR)/usr/bin/$$i; \
+		$(INSTALL) -m 0755 -D $$i $(TARGET_DIR)/usr/bin/$$i; \
 	done
 endef