crypto: skcipher - Use RNG interface instead of get_random_bytes

This patch makes the IV generators use the new RNG interface so
that the user can pick an RNG other than the default get_random_bytes.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 2274293..39dbd8e 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -41,6 +41,7 @@
 config CRYPTO_BLKCIPHER
 	tristate
 	select CRYPTO_ALGAPI
+	select CRYPTO_RNG
 
 config CRYPTO_HASH
 	tristate
@@ -125,6 +126,7 @@
 	tristate "Sequence Number IV Generator"
 	select CRYPTO_AEAD
 	select CRYPTO_BLKCIPHER
+	select CRYPTO_RNG
 	help
 	  This IV generator generates an IV based on a sequence number by
 	  xoring it with a salt.  This algorithm is mainly useful for CTR