SUSE-SU-2020:3474-1 Security update for u-boot

This update for u-boot fixes the following issues: Work around CVE-2019-11059 by disabling 64Bit descritptor size bsc1134853 CVE-2019-11690 bsc1134157, CVE-2020-10648 bsc1167209, CVE-2019-13103 bsc1143463, CVE-2019-14197 bsc1143821, CVE-2019-14200 bsc1143825, CVE-2019-14201 bsc1143827,...