[feature suggestion] provide PARTUUID as designation for ROOT_DEV
If the system is booted from another drive other than the eMMC the ROOT_DEV
has to be changed but is currently limited only to the /dev/sdX
designation set by the kernel, which in case of multiple hard drives being connected could vary.
u-boot
provides root=PARTUUID=
which makes it independent of the kernel's /dev/sdX
designation and thus I trust it would be handy for schnapps
being able to set the ROOT_DEV
with PARTUUID=
as well.