rust: Skip target recipe since it doesn't work

The target rust recipe is known not to work. Add a SkipRecipe entry for
that so world builds don't include something known to be broken and
hence give users a sensible message if they do try and build it rather
than a build failure.

(From OE-Core rev: 16c77c82ff6635b0180690ea117e2eff8fd63afb)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/rust/rust_1.54.0.bb

@@ -11,3 +11,10 @@ do_compile () {
 rust_do_install() {
     rust_runx install
 }
+
+python () {
+    pn = d.getVar('PN')
+
+    if not pn.endswith("-native"):
+        raise bb.parse.SkipRecipe("Rust recipe doesn't work for target builds at this time. Fixes welcome.")
+}