fscrypt-crypt-util: fix KDF contexts for SM8650

fscrypt-crypt-util: fix KDF contexts for SM8650

Update the KDF contexts to match those actually used on SM8650.  This
turns out to be needed for the hardware-wrapped key tests generic/368
and generic/369 to pass on the SM8650 HDK (now that I have one to
actually test it).  Apparently the contexts changed between the
prototype version I tested a couple years ago and the final version.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>