rm_work.bbclass: Improve handling of noexec tasks

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

meta/classes/rm_work.bbclass

@@ -32,6 +32,7 @@ do_rm_work () {
 
     # Change normal stamps into setscene stamps as they better reflect the
     # fact WORKDIR is now empty
+    # Also leave noexec stamps since setscene stamps don't cover them
     cd `dirname ${STAMP}`
     for i in `basename ${STAMP}`*
     do
@@ -41,6 +42,14 @@ do_rm_work () {
             *do_setscene*)
                 break
                 ;;
+            *do_package_write*)
+                i=dummy
+                break
+                ;;
+            *do_build*)
+                i=dummy
+                break
+                ;;
             *_setscene*)
                 i=dummy
                 break