add more Radeon functionality

include/i2c.h

@@ -84,6 +84,7 @@ struct i2c_msg
     unsigned char *buf;     /* pointer to msg data			*/
 };
 
+/*
 extern void i2c_init(void);
 extern void i2c_set_frequency(int hz);
 extern int i2c_read(int address, char *data, int lengt, bool repeated);
@@ -92,5 +93,5 @@ extern int i2c_write(int address, const char *data, int length, bool repeated);
 extern int i2c_write_byte(int data);
 extern void i2c_start(void);
 extern void i2c_stop(void);
-
+*/
 #endif /* _I2C_H */