rsync: fix build with config cache

Signed-off-by: Olaf Rempel <razzor@kopf-tisch.de>

Acked-by: Thiago A. Correa <thiago.correa@gmail.com>

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/rsync/rsync.mk

@@ -8,6 +8,7 @@ RSYNC_VERSION:=3.0.5
 RSYNC_SOURCE:=rsync-$(RSYNC_VERSION).tar.gz
 RSYNC_SITE:=http://rsync.samba.org/ftp/rsync/src
 RSYNC_AUTORECONF:=no
+RSYNC_USE_CONFIG_CACHE:=no
 RSYNC_INSTALL_STAGING:=NO
 RSYNC_INSTALL_TARGET:=YES
 ifeq ($(BR2_ENABLE_DEBUG),y)