[media] cx24120: Fix hexdump length in writeregs

msg.len has been ++'d so msg.len is one too many.

Signed-off-by: Jemma Denson <jdenson@gmail.com>
Signed-off-by: Patrick Boettcher <patrick.boettcher@posteo.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/dvb-frontends/cx24120.c

@@ -245,7 +245,7 @@ static int cx24120_writeregs(struct cx24120_state *state,
 
 		dev_dbg(&state->i2c->dev,
 			"%s: reg=0x%02x; data=%*ph\n",
-			__func__, reg, msg.len, msg.buf + 1);
+			__func__, reg, msg.len - 1, msg.buf + 1);
 	}
 
 	ret = 0;