Upgrade the library version to recently released 0.8.0 .
The COPYING file changed again, but the changes are just new names
added to the Copyright (C) YYYY John Doe <...> section, no changes
to the license itself.
Signed-off-by: Marek Vasut <marex@denx.de> Cc: Khem Raj <raj.khem@gmail.com> Cc: Saul Wold <sgw@linux.intel.com> Cc: Richard Purdie <richard.purdie@linuxfoundation.org> Signed-off-by: Ross Burton <ross.burton@intel.com>