[CRYPTO] geode: Fix in-place operations and set key

Allow in-place crypto operations. Also remove the coherent user flag
(we use it automagically now), and by default use the user written
key rather then the HW hidden key - this makes crypto just work without
any special considerations, and thats OK, since its our only usage
model.

Signed-off-by: Jordan Crouse <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/geode-aes.c

···
 	u32 flags = 0;
 	unsigned long iflags;
 
-	if (op->len == 0 || op->src == op->dst)
+	if (op->len == 0)
 		return 0;
 
-	if (op->flags & AES_FLAGS_COHERENT)
+	/* If the source and destination is the same, then
+	 * we need to turn on the coherent flags, otherwise
+	 * we don't need to worry
+	 */
+
+	if (op->src == op->dst)
 		flags |= (AES_CTRL_DCA | AES_CTRL_SCA);
 
 	if (op->dir == AES_DIR_ENCRYPT)
···
 		_writefield(AES_WRITEIV0_REG, op->iv);
 	}
 
-	if (op->flags & AES_FLAGS_USRKEY) {
+	if (!(op->flags & AES_FLAGS_HIDDENKEY)) {
 		flags |= AES_CTRL_WRKEY;
 		_writefield(AES_WRITEKEY0_REG, op->key);
 	}
···
 			.setkey			=	geode_setkey,
 			.encrypt		=	geode_cbc_encrypt,
 			.decrypt		=	geode_cbc_decrypt,
+			.ivsize			=	AES_IV_LENGTH,
 		}
 	}
 };

drivers/crypto/geode-aes.h

···
 #define AES_DIR_DECRYPT 0
 #define AES_DIR_ENCRYPT 1
 
-#define AES_FLAGS_USRKEY   (1 << 0)
-#define AES_FLAGS_COHERENT (1 << 1)
+#define AES_FLAGS_HIDDENKEY (1 << 0)
 
 struct geode_aes_op {