SUNRPC,RPCSEC_GSS: spkm3--fix config dependencies

Add default selection of CRYPTO_CAST5 when selecting RPCSEC_GSS_SPKM3.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/Kconfig

@@ -1567,6 +1567,7 @@ config RPCSEC_GSS_SPKM3
 	select CRYPTO
 	select CRYPTO_MD5
 	select CRYPTO_DES
+	select CRYPTO_CAST5
 	help
 	  Provides for secure RPC calls by means of a gss-api
 	  mechanism based on the SPKM3 public-key mechanism.