yafut: add missing PKG_MIRROR_HASH

Add missing PKG_MIRROR_HASH. This is always needed as is used to
generate and use a tar instead of git clone and validate the hash of it.

Signed-off-by: Christian Marangi <[email protected]>

package/utils/yafut/Makefile

@@ -5,6 +5,7 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=https://github.com/kempniu/yafut.git
+PKG_MIRROR_HASH:=6eece622d1df99ffee1a18d162d36292f32bf2d5e514663a6b61fd82c2ecbcba
 PKG_SOURCE_DATE:=2023-03-31
 PKG_SOURCE_VERSION:=16435e89d449f953712983315e1a89cdb678620d