We have shared code for this, let's use it.
(From OE-Core rev: e7a5d6e7802b58cf6eae1d83e4bf5c50ab66f80a)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>