crypto: ccp - select CONFIG_CRYPTO_RSA

Without the base RSA code, we run into a link error:

ERROR: "rsa_parse_pub_key" [drivers/crypto/ccp/ccp-crypto.ko] undefined!
ERROR: "rsa_parse_priv_key" [drivers/crypto/ccp/ccp-crypto.ko] undefined!

Like the other drivers implementing RSA in hardware, this
can be avoided by always enabling the base support when we build
CCP.

Fixes: ceeec0af ("crypto: ccp - Add support for RSA on the CCP")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/ccp/Kconfig

@@ -27,6 +27,7 @@ config CRYPTO_DEV_CCP_CRYPTO
 	select CRYPTO_HASH
 	select CRYPTO_BLKCIPHER
 	select CRYPTO_AUTHENC
+	select CRYPTO_RSA
 	help
 	  Support for using the cryptographic API with the AMD Cryptographic
 	  Coprocessor. This module supports offload of SHA and AES algorithms.