[tools] quilt: add findutils as dependency

Signed-off-by: Markus Stenberg <markus.stenberg@iki.fi>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38235 3c298f89-4303-0410-b956-a3cf2f4a3e73
[tools] patch: other tools might depend on this one

Signed-off-by: Markus Stenberg <markus.stenberg@iki.fi>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38236 3c298f89-4303-0410-b956-a3cf2f4a3e73