SUSE-SU-2020:2691-1 Security update for ovmf

This update for ovmf fixes the following issues: - CVE-2019-14562: Fixed an overflow in DxeImageVerificationHandler bsc1175476. - Support more SCSI drivers PvScsi, MptScsi and LsiScsi. bsc1119454 - Enable LsiScsi explicitly since it's disabled by default...