busybox: add hash

And rename 0006-lzop-add-overflow-check.patch to the proper convention.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/busybox/busybox.hash

@@ -0,0 +1,3 @@
+# From http://busybox.net/downloads/busybox-1.22.1.tar.bz2.sign
+md5	337d1a15ab1cb1d4ed423168b1eb7d7e	busybox-1.22.1.tar.bz2
+sha1	d6e96fefb6f0fb8079f27468b9bf22d8dd96108e	busybox-1.22.1.tar.bz2