V4L/DVB (3546): Fix Compilation after moving bttv code

- Missing a Makefile for bt8xx
- rds.h were at wrong directory, since it is a global header for an internal
  interface
- tda7432 and tda9875 were dependent from bttv.h
- bttv.h were holding i2c addresses

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

include/media/rds.h

@@ -0,0 +1,44 @@
+/*
+
+    Types and defines needed for RDS. This is included by
+    saa6588.c and every driver (e.g. bttv-driver.c) that wants
+    to use the saa6588 module.
+
+    Instead of having a seperate rds.h, I'd prefer to include
+    this stuff in one of the already existing files like tuner.h
+
+    (c) 2005 by Hans J. Koch
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef _RDS_H
+#define _RDS_H
+
+struct rds_command {
+	unsigned int  block_count;
+	int           result;
+	unsigned char __user *buffer;
+	struct file   *instance;
+	poll_table    *event_list;
+};
+
+#define RDS_CMD_OPEN	_IOW('R',1,int)
+#define RDS_CMD_CLOSE	_IOW('R',2,int)
+#define RDS_CMD_READ	_IOR('R',3,int)
+#define RDS_CMD_POLL	_IOR('R',4,int)
+
+#endif