rust-target.inc: add new include file to simplify all rust_*.bb

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

recipes-devtools/rust/rust-target.inc

@@ -0,0 +1,10 @@
+require rust.inc
+
+DEPENDS += "rust-llvm (=${PV})"
+
+# Otherwise we'll depend on what we provide
+INHIBIT_DEFAULT_RUST_DEPS_class-native = "1"
+# We don't need to depend on gcc-native because yocto assumes it exists
+PROVIDES_class-native = "virtual/${TARGET_PREFIX}rust"
+
+BBCLASSEXTEND = "native"