RFC: Adding U-Boot version in FDT chosen node

[Francesco Dolcini]

Hello all,
I have a need to pass the u-boot version string to the operating
system and I'm thinking at adding `u-boot,version` property storing
`version_string` in it in the FDT `chosen` node.

Is this something that would be generally useful? Would be a patch like
that acceptable in upstream u-boot? Is there any other obvious way to
achieve something like that already implemented (using the cmdline would
work without any code change, but probably not the nicest solution).

Francesco