In expectation of SPDX 3.0 support, move the create-spdx.bbclass ->
create-spdx-2.2.bbclass. The create-spdx.bbclass class still exists and
can be used if a user doesn't care about which specific version of SPDX
they get.
(From OE-Core rev: 9ec01fe3e59be66331c14ab5391ecb0b6f140c22)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>