urngd: move project to git.openwrt.org

Let's move project to a proper place.

Signed-off-by: Petr Štetiar <ynezz@true.cz>
(cherry picked from commit bec8fb1ee7)

package/system/urngd/patches/001-fix-compile.patch

@@ -1,11 +0,0 @@
---- a/urngd.c
-+++ b/urngd.c
-@@ -114,7 +114,7 @@ static size_t gather_entropy(struct urng
- 
- 	ret = write_entropy(u, buf, sizeof(buf), ENTROPYBYTES);
- 	if (sizeof(buf) != ret) {
--		ERROR("injected %lub of entropy, less then %db expected\n",
-+		ERROR("injected %zub of entropy, less then %zub expected\n",
- 		      ret, sizeof(buf));
- 	} else {
- 		ret = sizeof(buf);