RFC: Adding U-Boot version in FDT chosen node

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