Don't populate the read-only const array rates on the stack but
instead it static. Also makes the object code a little smaller.
Signed-off-by: NColin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220214213223.65780-1-colin.i.king@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>