pkg/log: add Fatal function
pkg/log: add Fatal function

Replacement for Fatalf("%v", err).

xairy/syzkaller,hyz0906/syzkaller,google/syzkaller,google/syzkaller,dotweiba/syzkaller,hyz0906/syzkaller,xairy/syzkaller,zoulasc/syzkaller,zoulasc/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,dotweiba/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,zoulasc/syzkaller,xairy/syzkaller,hyz0906/syzkaller,dotweiba/syzkaller,zoulasc/syzkaller,hyz0906/syzkaller,hyz0906/syzkaller,google/syzkaller,dotweiba/syzkaller