Fixes the build parameters code, since the build_parameter property was
changed to be singular in SPDX 3.0.1
(From OE-Core rev: e6e1e4585198b819319bab61ac2676e82f177020)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>