boot/barebox: license files hashes only valid for latest version

boot/barebox: license files hashes only valid for latest version

We can only know the details of the license files for known versions.  For
custom, older or newer versions, the license files may change, or may be
moved around.

So, do for Barebox as was done for ATF, linux, and linux-headers, and
only define the list of license files for the latest version.

Add the hash for that license file, and align hashes to the new spacing
convention.

Reported-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>