native: remove PN from DEPENDS automatically

If a recipe (say, wayland) has DEPENDS=wayland-native and BBCLASSEXTEND=native,
when built as wayland-native it has DEPENDS=wayland-native which results in a
circular dependency.

Typically this is resolved by having explicit DEPENDS_class-native statements
but as this is duplication which can lead to inconsistent dependencies,
automatically remove the circular dependency.

(From OE-Core rev: 3e9392c0965166462e0993d46f4cc2fb1832f1e5)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/native.bbclass

@@ -132,7 +132,9 @@ python native_virtclass_handler () {
         deps = bb.utils.explode_deps(deps)
         newdeps = []
         for dep in deps:
-            if "-cross-" in dep:
+            if dep == pn:
+                continue
+            elif "-cross-" in dep:
                 newdeps.append(dep.replace("-cross", "-native"))
             elif not dep.endswith("-native"):
                 newdeps.append(dep + "-native")