Revert "initlogo: Back to black and white... :("

This reverts commit 13b23865c99e2c8aa138337509c1d5f93e6c1b91.
Revert "initlogo: It's jolla-kernel_v6 !!"

This reverts commit 6f2c3d30d19ae38864e9dd7367c37d858e32b087.