tuners: treat firmware data as const

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c
index 0cbde17..30eb07b 100644
--- a/drivers/media/common/tuners/tuner-xc2028.c
+++ b/drivers/media/common/tuners/tuner-xc2028.c
@@ -254,7 +254,7 @@
 {
 	struct xc2028_data    *priv = fe->tuner_priv;
 	const struct firmware *fw   = NULL;
-	unsigned char         *p, *endp;
+	const unsigned char   *p, *endp;
 	int                   rc = 0;
 	int		      n, n_array;
 	char		      name[33];
diff --git a/drivers/media/common/tuners/xc5000.c b/drivers/media/common/tuners/xc5000.c
index 7cf4f5b..4878d64 100644
--- a/drivers/media/common/tuners/xc5000.c
+++ b/drivers/media/common/tuners/xc5000.c
@@ -278,7 +278,7 @@
 	return result;
 }
 
-static int xc_load_i2c_sequence(struct dvb_frontend *fe, u8 i2c_sequence[])
+static int xc_load_i2c_sequence(struct dvb_frontend *fe, const u8 *i2c_sequence)
 {
 	struct xc5000_priv *priv = fe->tuner_priv;