It's possible that src/intel/vulkcan can be written into by sed before it has
been created, so add the required mkdir calls.
(From OE-Core rev: 19e793f65d214294baa9eeaf982f4ced351c7748)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
