linux-imx

sunrpc: replace generic auth_cred hash with auth-specific function

Replace the generic code to hash the auth_cred with the call to
the auth-specific hash function in the rpc_authops struct.

Signed-off-by: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>