tiny-init: add rconflicts

add rconflicts since error during do_rootfs:
file /sbin/init conflicts between attempted installs of tiny-init-1.0-r3.i586 and systemd-1:242+0+db2e367bfc-r0.i586

(From meta-yocto rev: 28bdd6efe8a4fff12ee169a227762ec0978dab36)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-poky/recipes-core/tiny-init/tiny-init.bb

@@ -28,3 +28,4 @@ do_install() {
 }
 
 FILES_${PN} = "/init ${sysconfdir}/rc.local.sample"
+RCONFLICTS_${PN} = "systemd"