crypto: sun4i-ss - fix big endian issues

BugLink: https://bugs.launchpad.net/bugs/1863019



commit d1d787bc upstream.

When testing BigEndian kernel, the sun4i-ss was failling all crypto
tests.
This patch fix endian issues with it.

Fixes: 6298e948 ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>