crypto: drbg - Add stdrng alias and increase priority

This patch adds the stdrng module alias and increases the priority
to ensure that it is loaded in preference to other RNGs.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/drbg.c b/crypto/drbg.c
index 9284348..04836b4 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1876,7 +1876,7 @@
 					  const struct drbg_core *core, int pr)
 {
 	int pos = 0;
-	static int priority = 100;
+	static int priority = 200;
 
 	memcpy(alg->base.cra_name, "stdrng", 6);
 	if (pr) {
@@ -1965,3 +1965,4 @@
 		   CRYPTO_DRBG_HASH_STRING
 		   CRYPTO_DRBG_HMAC_STRING
 		   CRYPTO_DRBG_CTR_STRING);
+MODULE_ALIAS_CRYPTO("stdrng");