crypto: atmel-aes - constify value argument of atmel_aes_write_n()

atmel_aes_write_n() should not modify its value argument.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/atmel-aes.c

@@ -231,7 +231,7 @@ static void atmel_aes_read_n(struct atmel_aes_dev *dd, u32 offset,
 }
 
 static void atmel_aes_write_n(struct atmel_aes_dev *dd, u32 offset,
-					u32 *value, int count)
+			      const u32 *value, int count)
 {
 	for (; count--; value++, offset += 4)
 		atmel_aes_write(dd, offset, *value);