tiny-init: set proper S value

Ensure that we are using a proper value for S, instead of the default
value.

All recipes must have a proper value set for S when solving [YOCTO #5627].

(From meta-yocto rev: 5ed1f6622435d8a38c472c8e5e5876900c9fc0f8)

Signed-off-by: Petter Mabäcker <petter@technux.se>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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

@@ -11,6 +11,8 @@ SRC_URI = "file://init \
 	   file://rc.local.sample \
 	  "
 
+S = "${WORKDIR}"
+
 do_configure() {
 	:
 }