geom_uzip need xz device

[Eugene Grosbein]

05.03.2019 8:46, Mori Hiroki wrote:

> Hi
> 
> Also change device name.
> 
> New: flash/mx25l0s.rootfs.uzip
> Old: flash/spi0s.rootfs.uzip
> 
> Be careful update system.

This part is not about geom_uzip but flash drivers, see commit log:
https://svnweb.freebsd.org/base?view=revision&revision=344526

One better refer file system using persistent UFS label (tunefs -L)
instead of driver-dependent path, so such changes do not affect mounts.