This change ensures that the SRC_URI is set before base.bbclass code is called. This will
also ensure that the xz-native depends is set correct.
[YOCTO #5127]
(From OE-Core rev: 787335494dc0a3f93d9bf5a6cf1b603c8675df66)
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>