coreutils: optimize the '[' symlink

Link '[' directly to the coreutils binary instead of going through
'test'.

Suggested-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/coreutils/coreutils.mk

@@ -112,7 +112,7 @@ endif
 
 define COREUTILS_CLEANUP
 	# link for archaic shells
-	ln -fs test $(TARGET_DIR)/usr/bin/[
+	ln -fs coreutils $(TARGET_DIR)/usr/bin/[
 	# gnu thinks chroot is in bin, debian thinks it's in sbin
 	rm -f $(TARGET_DIR)/usr/bin/chroot
 	ln -sf ../bin/coreutils $(TARGET_DIR)/usr/sbin/chroot