crypto: rng - Fix typo

Correct a typo in crypto/rng.c

Signed-off-by: Christian Kujau <lists@nerdbynature.de>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/rng.c b/crypto/rng.c
index 6e94bc7..ba05e73 100644
--- a/crypto/rng.c
+++ b/crypto/rng.c
@@ -123,4 +123,4 @@
 EXPORT_SYMBOL_GPL(crypto_put_default_rng);
 
 MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Random Number Genertor");
+MODULE_DESCRIPTION("Random Number Generator");