Re-running the debug_patch task would cause the build to fail. This patch
moves the extra patch handling directly into SRC_URI and removes the need
for the separate task, allowing safe re-execution of each task.
[YOCTO #2194]
(From OE-Core rev: 1d6156e37ef0f36cf5ce8eeaaf23560215c86833)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>