rateconv.c looks like BSD-2 but it has second clause modified
significantly, therefore be specific about it.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit d901de434d2fee62e2a37c4150108921b2dd13e5)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
802b41d217