[media] af9015: Fix max I2C message size when used with tda18271

Changeset 1724c8fa added an option to change
the maximum I2C size to 8 bytes. However, it forgot to replace the previous
usage at af9015 to use the newly defined macro value
(TDA18271_16_BYTE_CHUNK_INIT).

A latter changeset (e350d44f) extended the
possible values for .small_i2c field and, instead of using a random sequence
of numbers, it used a number that makes more sense (e. g. the actual limit,
in terms of bytes).

However, as af9015 were using .small_i2c = 1, this become undefined, and the
restriction of a max size of 16 was gone.

While here, fix the reported msg size at tda18271-common.c.
Reported-by: NJiri Slaby <jirislaby@gmail.com>
Tested-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/tuners/tda18271-common.c

@@ -237,7 +237,7 @@ int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len)
 
 	if (ret != 1)
 		tda_err("ERROR: idx = 0x%x, len = %d, "
-			"i2c_transfer returned: %d\n", idx, len, ret);
+			"i2c_transfer returned: %d\n", idx, max, ret);
 
 	return (ret == 1 ? 0 : ret);
 }

drivers/media/dvb/dvb-usb/af9015.c

@@ -1131,7 +1131,7 @@ static struct qt1010_config af9015_qt1010_config = {
 
 static struct tda18271_config af9015_tda18271_config = {
 	.gate = TDA18271_GATE_DIGITAL,
-	.small_i2c = 1,
+	.small_i2c = TDA18271_16_BYTE_CHUNK_INIT,
 };
 
 static struct mxl5005s_config af9015_mxl5003_config = {