The SDK and target/toolchain copy the license file into their
directories. During the rename/move from LICENSE to a LICENSES
folder, this has not been updated.
Update it now, and include the new COPYING file.
While at it, improve formatting/indent.
Fixes: 882e301461 ("LICENSES: include all used licenses in
LICENSES directory")
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>