Update qemu config
Add SMP, inotify, virtio-sound, packet sockets, and TCP syn cookies.
build: Explicitly specify xz dependency
qemu: Enable CONFIG_FB for linux 5.14
x99, t14: Use efivarfs instead of legacy sysfs variables
t14: Enable CONFIG_FB for linux 5.14
t14: Add support for iso9660 filesystems
t14: Add support for PL2303 USB serial
t14: Add support for USB audio
t14: Enable USB storage support
t14: Enable support for Xbox controller
t14: Compress kernel with zstd
t14: Enable driver for SD card reader
t14: Enable microphone support