crypto: sparc/des - switch to new verification routines

Switch to the refactored DES key verification routines. While at it,
rename the DES encrypt/decrypt routines so they will not conflict with
the DES library later on.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>