Remove redundant parts from the deployed and installed SPL artifact
names of multi config configurations to match the other U-Boot artifact
names.
(From OE-Core rev: 74f1f84d09ec5b435942e2a83697834677055343)
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>