crypto: vmx - Ensure ghash-generic is enabled

crypto: vmx - Ensure ghash-generic is enabled

BugLink: https://bugs.launchpad.net/bugs/1630970
Select CRYPTO_GHASH for vmx_crypto since p8_ghash uses it as the
fallback implementation.

Signed-off-by: Marcelo Cerri <marcelo.cerri@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 8df4f27c04c0e061b4b2c142bfbae1602bb1b776)
Signed-off-by: Marcelo Cerri <marcelo.cerri@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>